LUFKIN INDUSTRIES INC
10-K, 1999-03-25
GENERAL INDUSTRIAL MACHINERY & EQUIPMENT
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION

                            Washington, D. C. 20549

                                   FORM 10-K

               ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                      THE SECURITIES EXCHANGE ACT OF 1934


                           December 31,
For the fiscal year ended    1998                 Commission file number  0-2612
 
                            LUFKIN INDUSTRIES, INC.
            ------------------------------------------------------
            (Exact name of registrant as specified in its charter)
 
                  Texas                                    75-0404410
      -------------------------------                  -------------------
      (State or other jurisdiction of                  (I.R.S. Employer
      incorporation or organization)                   Identification No.)
 
     601 South Raguet, Lufkin, Texas                          75904
 ----------------------------------------                  ----------
 (Address of principal executive offices)                  (Zip Code)
 
Registrant's telephone number, including area code   409/634-2211

Securities registered pursuant to Section 12(b) of the Act:  None
Securities registered pursuant to Section 12(g) of the Act:


                     Common Stock, Par Value $1 Per Share
                     ------------------------------------
                               (Title of Class)


Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.  Yes [X]   No [_]

Indicate by "X" if disclosure of delinquent filers pursuant to Item 405 of
Regulation S-K is not contained herein and will not be contained, to the best of
the registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [_]

The aggregate market value of the Company's voting stock held by non-affiliates
as of January 31, 1999 was $104,753,000.

6,577,051 shares of the Company's Common Stock were outstanding on December 31,
1998.

                      DOCUMENTS INCORPORATED BY REFERENCE

Portions of the sections entitled "Financial Review", "Letter to the
Shareholders", "Management's Discussion and Analysis", "Product Line
Information"  and the consolidated financial statements of the Company's Annual
Report to Shareholders for the year ended December 31, 1998, are incorporated by
reference in Parts I, II and IV, hereof and are included as Exhibit 13.

The sections entitled "Voting Securities", "Directors and Nominees for Director"
and "Executive Compensation" of the Company's definitive Proxy Statement for its
annual meeting of shareholders on May 5, 1999, are incorporated by reference in
Part III hereof.
<PAGE>
 
                                    Part I

Item 1.   Business

     The Company was incorporated under the laws of Texas on March 4, 1902 and
since that date, has maintained its principal office and manufacturing
facilities in Lufkin, Texas.  The Company designs, manufactures, sells, and
services various types of oil field pumping units, power transmission products,
foundry castings and highway trailers. Lufkin manufactures four basic types of
pumping units:  an air-balanced unit; a beam-balanced unit; a crank-balanced
unit; and a Mark II Unitorque unit.  The basic differences between the four
types relate to the counterbalancing system.  The depth of a well and the
desired fluid production determine the type of counterbalancing configuration
that is required.  There are numerous sizes and combinations of Lufkin oil field
pumping units within the four basic types.  The Company's power transmission
products (speed increasers and reducers) are designed, manufactured and sold
primarily for use in industrial applications such as petrochemical, refining,
rubber, plastics and steel and for use in marine propulsion applications.  The
Company produces numerous sizes and combinations of gears.  The Company's
foundry castings are primarily customer designed components manufactured by
Lufkin for use in customer products.  Lufkin also produces various sizes and
styles of trailers, including vans, platforms, and dumps.

     The Company manufactures most of the component parts used in its Oil Field,
Foundry Castings and Power Transmission products and purchases the raw materials
and outside manufactured parts from a variety of suppliers on an order basis.
The Trailer Division generally assembles various component parts manufactured by
others.  The inventory consists primarily of raw materials and component parts
which are generally assembled into finished products to fill specific customer
orders.  These finished products are sold primarily by the Company's own
employees.

     Oil field pumping units are the Company's primary products sold for export.
These sales, other than to Canada, are made principally through foreign sales
representatives, licensees and distributors.  During 1998, foreign sales
accounted for approximately 14 percent of the Company's total sales.

     The Company's domestic and international markets are highly competitive
with price, quality and speed of delivery being important factors.  While the
Company believes that it is one of the larger manufacturers of sucker rod
pumping units in the United States, manufacturers of other types of units
(submersibles and hydraulics)  have a significant share of the total pumping
unit market.  The Company does not believe it has a large market share in the
power transmission, foundry castings or trailer markets.

     The Company employed approximately 2,300 people at December 31, 1998,
including approximately 1,700 that were paid on an hourly basis.  The Company
has an open shop contract, which runs to October 3, 1999, with three AFL-CIO
labor unions.  The Company considers its employee relations to be satisfactory.

     Additional information required by Item 1 is included in the sections
entitled "Management's Discussion and Analysis", "Letter to the Shareholders",
and "Product Line Information" of the Annual Report, portions of which sections
are incorporated herein by reference and included as part of Exhibit 13.

Item 2.   Properties

     The Company's major manufacturing facilities are located in and near
Lufkin, are owned in fee and include approximately 150 acres, a foundry, machine
shop, structural shops, assembly shops and warehouses.  The Company also has a
plant in Nisku, Canada which produces structural parts for pumping units.  These
parts are then assembled with parts shipped from Lufkin and are delivered to the
Company's Canadian customers.

Item 3.   Legal Proceedings

     None

Item 4.   Submission of Matters to a Vote of Shareholders

     None
<PAGE>
 
Item 4A.  Executive Officers of the Registrant

     The following information is submitted with respect to the executive
officers of the Company as of March 1, 1999:
                                                            Officer
   Name                 Position with Company        Age     Since
   ----                 ---------------------        ---    -------
D. V. Smith             Chairman, President &
                          Chief Executive Officer     56      1993
J. F. Glick             Vice President                46      1994
M. A. Penn              Vice President                58      1983
E. G. Pittman           Vice President                65      1976
S. H. Semlinger         Vice President                45      1992
C. J. Haley, Jr.        Secretary-Treasurer           56      1973
L. M. Hoes              Vice President                52      1996
P. G. Perez             Vice President                53      1996

     There is no significant family relationship either by blood or by marriage
among the officers of the Company.

     All of the executive officers of the Company, with the exception of Mr.
Glick, Mr. Hoes and Mr. Perez have been employed by the Company for more than
five years in the same or similar positions.  Mr. Glick was first employed by
the Company in September 1994 to serve as Vice President and General Manager of
the Power Transmission Division.  Prior to joining the Company, Mr. Glick served
as Director of Manufacturing, U.K. and Ireland, with Cooper Oil Tools and as
Plant Manager of Cooper Oil Tools in Leeds, England.  Mr. Hoes was first
employed by the Company in May, 1996 to serve as Vice President and General
Manager of the Oil Field Products Division.  Prior to joining the Company, Mr.
Hoes was employed as Vice President of Manufacturing for Cooper Cameron Inc. in
Houston, Texas, as Vice President of Manufacturing for Cooper Oil Tool Division
and as Vice President of Engineering for Cooper Oil Tool Division based in
Houston, Texas.  Mr. Perez was first employed by the Company in July, 1993 to
serve as Director of Human Resources.  Mr. Perez was previously employed by
Cooper Industries as Manager of Employee Relations for Cooper Oil Tool Division
in Houston, Texas and by Cameron Iron Works as Manager of Labor Relations in
Houston, Texas.  The executive officers of the Company serve at the pleasure of
the Board of Directors of the Company.  The term of office for all officers
expires at the next annual meeting of the Board of Directors of the Company.

                                    Part II

Item 5.   Market for the Registrant's Common Stock 
            and Related Shareholder Matters

     The information required by Item 5 is included in the section entitled
"Financial Review" of the Annual Report to Shareholders, which section is
incorporated herein by reference and included as part of Exhibit 13.

Item 6.   Selected Financial Data
<TABLE>
<CAPTION>
 
                                 FIVE YEAR SUMMARY OF SELECTED
                                  CONSOLIDATED FINANCIAL DATA
<S>                                       <C>      <C>      <C>      <C>      <C>
(In millions, except per share data)        1998     1997     1996     1995     1994
- ------------------------------------------------------------------------------------
Sales                                     $283.7   $287.6   $226.0   $248.9   $217.3
Earnings (loss) from operations             13.6     14.8     10.5      8.9     (1.2)*
Earnings (loss) per share
 Basic                                      2.11     2.26     1.57     1.31     (.18)
 Diluted                                    2.08     2.22     1.56     1.31     (.18)
Total assets                               242.8    209.8    185.9    186.3    176.8
Long term notes payable                     11.5      6.7        -        -        -
Cash dividends per share                     .72      .68      .60      .60      .60
</TABLE>
*Includes pretax charges of $11.2 million for special inventory writedowns.
<PAGE>
 
Item 7.  Management's Discussion and Analysis
           of Financial Condition and Results of Operations

     The information required by Item 7 is included in the section entitled
"Management's Discussion and Analysis" of the Company's Annual Report to
Shareholders, portions of which section are incorporated herein by reference and
included as part of Exhibit 13.


Item 7a.  Quantitative and Qualitative Disclosures about Market Risk

     The information required by Item 7a is included in the section entitled
"Management's Discussion and Analysis" of the Company's Annual Report to
Shareholders, portions of which section are incorporated herein by reference and
included as part of Exhibit 13.

Item 8.   Financial Statements and Supplementary Data

     The information required by Item 8 is included in the consolidated
financial statements and related notes and the "Report of Independent Public
Accountants" of the Company's Annual Report to Shareholders, which consolidated
financial statements and related notes and report of independent public
accountants are incorporated herein by reference and included as part of Exhibit
13.

Item 9.   Changes in and Disagreements with
            Accountants on Accounting and Financial Disclosure

     None

                                   Part III


Item 10.  Directors and Executive Officers of the Registrant

      The information required by Item 10 relating to the directors of the
Company is included in the section entitled "Directors and Nominees for
Director" on pages 2  through 4 of the definitive Proxy Statement for the annual
meeting of Company shareholders on May 5, 1999 ("Proxy Statement"), which
section is incorporated herein by reference.  The information relating to the
executive officers of the Company is provided in Item 4A of Part I of this
Annual Report.

Item 11.  Executive Compensation 

     The information required by Item 11 is included in the section entitled
"Executive Compensation" on pages 6 through 11 of the Proxy Statement, which
section is incorporated herein by reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management

     The information required by Item 12 is included in the sections entitled
"Voting Securities" and "Election of Directors" on pages 1 through 4 of the
Company's Proxy Statement, which sections are incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions

     None
<PAGE>
 
                                    Part IV


Item 14.  Exhibits, Financial Statement Schedules, and Reports on Form 8-K

     (a)  Documents filed as part of the report

          1. Consolidated Financial Statements (incorporated by
             reference to the Annual Report to Shareholders)

             Report of Independent Public Accountants
             Consolidated Balance Sheet
             Consolidated Statement of Earnings
             Consolidated Statement of Shareholders' Equity
             Consolidated Statement of Cash Flows
             Notes to Consolidated Financial Statements

          2. Financial statement schedules

             Schedules Omitted--All schedules for which
             provision is made in the applicable regulations of
             the Securities and Exchange Commission have been
             omitted because they are not applicable or not re-
             quired or the required information is included in
             the consolidated financial statements or notes thereto.

          3. Exhibits

               (3)    Articles of Incorporation, as amended, and
                      Bylaws, as amended, were included as exhibit 3
                      to Form 10-K of the registrant for the year
                      ended December 31, 1990, which exhibits are
                      incorporated herein by reference.

              (10.1)  Shareholder Rights Agreement, dated as of
                      May 4, 1987, was included as exhibit (1)
                      to Form 8-A of the registrant dated May 13,
                      1987, which agreement is incorporated herein
                      by reference.

              (10.2)* Company's 1990 Stock Option Plan was included
                      as Exhibit 99.1 to the Company's registration
                      statement on Form S-8 dated September 24, 1990
                      (File No. 33-36976), which plan is incorporated
                      herein by reference.

              (13)    Portions of the Annual Report
                      to Shareholders for the year ended
                      December 31, 1998 are included as an
                      exhibit to this report for the informa-
                      tion of the Securities and Exchange Com-
                      mission.

              (21)    Schedule listing subsidiaries of the
                      registrant

              (23)    Consent of Independent Public Accountants

              (27)    Financial Data Schedule


          *Compensatory plan.

     (b)  Reports on Form 8-K filed during the fourth quarter of 1998

          None
<PAGE>
 
                                  SIGNATURES


     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, Lufkin Industries, Inc. has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized, on February
17, 1999.

LUFKIN INDUSTRIES, INC.

BY /s/ C. James Haley, Jr.
   ------------------------------------------
   C. James Haley, Jr., Secretary-Treasurer
   Principal Financial and Accounting Officer

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed on February 17, 1999, below by the following persons on
behalf of Lufkin Industries, Inc. and in the capacities indicated.


By /s/ D. V. Smith
   ------------------------------------------
   D. V. Smith, President and Chief Executive
   Officer


By /s/ S. W. Henderson, III
   ------------------------------------------
   S. W. Henderson, III, Director


By /s/ L. R. Jalenak, Jr.
   ------------------------------------------
   L. R. Jalenak, Jr., Director


By /s/ H. H. King
   ------------------------------------------
   H. H. King, Director


By /s/ M. E. Kurth, Jr.
   ------------------------------------------
   M. E. Kurth, Jr., Director


By /s/ W. T. Little
   ------------------------------------------
   W. T. Little, Director


By /s/ J. H. Lollar
   ------------------------------------------
   J. H. Lollar, Director


By /s/ B. H. O'Neal
   ------------------------------------------
   B. H. O'Neal, Director


By /s/ H. J. Trout, Jr.
   ------------------------------------------
   H. J. Trout, Jr., Director


By /s/ W. W. Trout, Jr.
   ------------------------------------------
   W. W. Trout, Jr., Director


By /s/ T. E. Wiener
   ------------------------------------------
   T. E. Wiener, Director

<PAGE>
 
EXHIBIT 13. PORTIONS OF LUFKIN INDUSTRIES, INC. ANNUAL REPORT TO SHAREHOLDERS

                            LUFKIN INDUSTRIES, INC.
                            LETTER TO SHAREHOLDERS


LETTER TO SHAREHOLDERS:

  During the past year, the management team of Lufkin Industries continued to
drive each of our four business units forward, better positioning them for long-
term profitable growth.  Our strategy has focused on achieving long-term growth
through synergistic acquisitions, entering new markets, developing additional
products and expanding the array of services Lufkin provides its customers.
While 1998 started on an upbeat note, the slow down in world economies and the
decline in the price of oil through the year caused our final overall financial
results to be below our early expectations.  We currently expect these trends to
continue during the first half of 1999, yet we remain convinced that our
strategies are appropriate and the successful execution of them will allow
Lufkin to more effectively compete in world markets and achieve future growth.

  For the year ended December 31, 1998, net sales were $283.7 million compared
with $287.6 million for the year ended December 31, 1997.  Sales in 1998 of oil
field products decreased to $57.5 million compared with $81.6 million in 1997
primarily as a result of the low price of oil for much of the year; foundry
casting products sales decreased to $30.3 million from $34.5 million a year ago;
and power transmission products sales increased to $72.9 million compared with
$70.8 million in 1997.  Sales of trailers in 1998 were $123.0 million, up from
$100.7 million in 1997.  Contributing to the increase was the growing acceptance
by customers of new types of trailers introduced over the last few years.

  Net operating income for the year ended December 31, 1998, was $21.1 million
compared with $21.6 million in 1997.  Net income for the year was $13.6 million
compared with $14.8 million, and earnings per share (diluted) were $2.08
compared with $2.22 a year ago.  Results for 1998 include non-recurring gains of
approximately $1.4 million, or $0.21 per share (diluted) related to the sale of
certain assets and lower than expected costs on certain employee benefits and
manufacturing items.  The 1998 results primarily reflect the lower sales volumes
and change in product mix which offset improvements in our operations that
increased productivity and lowered costs.

  Lufkin's total backlog as of December 31, 1998, decreased to $87.9 million
compared with $130.3 million a year ago.  The backlog for oil field products was
$3.7 million compared with $15.2 million a year ago reflecting the lower price
of oil in 1998 compared with a year ago.  At year-end the backlog for power
transmission products was $31.1 million compared with $36.6 million primarily
related to weakness in the Asian markets.  For trailers, the backlog at December
31, 1998, was $44.7 million compared with $62.8 million.  The decrease was due
to recent record shipments of highway trailer products.  The backlog for foundry
castings was $8.4 million at December 31, 1998, compared with $15.7 million a
year ago.  The decline is attributable to increased pricing pressure and the
depressed economies in the Far East markets.  We continue to aggressively manage
the cost side of our businesses and believe our backlogs will increase as the
major industrial sectors in the world show improvement.

  Lufkin ended 1998 with total assets of $242.8 million and working capital of
$61.0 million.  Lufkin's shareholders' equity at year-end was $162.9 million;
the book value was $24.77, an increase of 7% from $23.17 per share at December
31, 1997.  Earnings before interest, taxes, depreciation and amortization
(EBITDA), a traditional financial measure that continued to trend upward
increasing to $30.3 million in 1998.  EBITDA has increased in each of the last
five years.  The Company's current ratio was better than 2.5 to 1, with cash and
temporary investments totaling $7.8 million.  Lufkin's total debt at December
31, 1998, was $22.7 million.  Lufkin continues to maintain a very sound
financial position.

  Having undergone an extensive review of each of its business units in 1997 and
1998, we have focused on ways to use resources to enhance shareholder value.  We
have done so by improving operational capability and performance, decreasing
product cycle times, reducing scrap and work-in-process, introducing new and
innovative products, developing new support for markets we currently serve,
expanding our international sales presence, making new capital investments,
increasing our customer support, providing the tools and training for our
employees to increase productivity, and completing synergistic acquisitions.

  During 1998, Lufkin completed three acquisition.  The first occurred in May of
1998 when we acquired Lone Star Machine Shop, Inc. Of Denver City, Texas.  Lone
Star Machine Shop provides a variety of oil field services including the
manufacturing of parts for pumping units.  This acquisition expands Lufkin's
capability to 
<PAGE>
 
provide local manufacturing and to deliver on-site installation and necessary
technical support to the oil field industry. We believe Lone Star Machine Shop
provides unique opportunities to extend the role of Lufkin in serving the oil
and gas industries.

  The second acquisition completed in 1998 was the French company COMELOR
located in Fougerolles, France.  COMELOR manufactures industrial gears which are
used in applications including those in the steel, material handling, power
generation and petrochemical industries.  The acquisition furthers our
commitment to expanding this international presence of Lufkin's power
transmission business.  COMELOR provides an excellent platform to better support
customers in Europe, the Middle East and Asia while providing an entry into
several complementary markets which we are not currently serving.

  Our third acquisition was completed in December when Lufkin acquired Delta-X
Corporation, of Houston, Texas.  Delta-X is a well-known supplier of oil well
automation technology and will be integrated into our NABLA operation to form a
stronger presence in the oil well automation market.  This acquisition furthers
our commitment to improving our position in the oil field automation markets.

  These three acquisitions provide new products and technical services,
additional sales support, greater manufacturing capabilities and open new
markets for Lufkin.  We intend to be aggressive in looking for similar types of
acquisitions which will also be a good use of our financial resources and will
provide greater benefit to our shareholders.

  As part of the Board of Directors' view toward maximizing the long-term value
of Lufkin, the Board has continued to believe that periodic repurchases of
common stock of Lufkin represents an attractive use of a portion of available
cash.  In 1998, the Board authorized the use of up to $8.0 million for the
repurchase of shares of Lufkin's common stock.  A total of 198,000 shares of
common stock, or 3% of the total shares outstanding, were purchased in 1998
pursuant to this repurchase authorization.  As of December 31, 1998, a total of
490,000 shares have been repurchased under the Company's previous share
repurchase programs.

  In February 1998, the Board approved a 6% increase in the Company's quarterly
cash dividend to $0.18 per share from the previous quarterly rate of $0.17 per
share.  The current rate is equivalent to an annual dividend of $0.72 per share.
Lufkin has paid a quarterly cash dividend for 59 consecutive years.  The
combination of an aggressive stock repurchase program and an increasing dividend
is part of management's strategy to have shareholders directly participate in
the increase in the long-term value of Lufkin.

  Much has been written about the potential problems associated with the Year
2000 date change.  In response to the Y2K concerns, Lufkin has developed a
comprehensive compliance program that addresses the necessary equipment and
software upgrades to its systems and has substantially completed the testing
phase of its plan.  We anticipate that all of our computer systems will be Y2K
compliant well in advance of the end of this year and the risks of the Y2K issue
will be addressed.

  We are not satisfied with the financial results in 1998.  However, the longer
term strategic direction of Lufkin was strengthened, and we firmly believe the
direction is sound.  We intend to capitalize on opportunities to improve our
competitive position and increase market share.  At the same time, we will deal
effectively with any challenge that may arise.

  I personally want to extend my appreciation to our employees, suppliers,
customers and shareholders for their continued support and understanding.  I can
assure you that the management team and Board of Directors are dedicated to the
long-term goal of increasing shareholder value.

Sincerely,

/s/ DOUGLAS V. SMITH
- -------------------------------------
Douglas V. Smith
President and Chief Executive Officer


2
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                               FINANCIAL REVIEW
                   Lufkin Industries, Inc. and Subsidiaries
 
COMMON STOCK INFORMATION
                                  1998                           1997
                    ----------------------------   ----------------------------
                       Stock Price                    Stock Price
                    -----------------              -----------------
Quarter              High       Low     Dividend    High       Low     Dividend
- -------------------------------------------------------------------------------
First               $35.938   $28.500       $.18   $26.125   $21.500       $.17
Second               38.063    29.250        .18    26.625    21.500        .17
Third                35.000    22.750        .18    31.625    25.500        .17
Fourth               26.500    16.875        .18    40.500    30.750        .17

  The Company's common stock is traded on the Nasdaq Stock Market (National
Market) under the symbol LUFK and as of March 8, 1999, there were approximately
720 record holders of its common stock.

  The Company has paid cash dividends for 59 consecutive years.  Total dividend
payments were $4,752,000 and $4,460,000 in 1998 and 1997, respectively.

Quarterly Financial Data (Unaudited)
 
In millions, except              First    Second     Third    Fourth
per share data                  Quarter   Quarter   Quarter   Quarter
- ---------------------------------------------------------------------
 
1998
Net sales                         $73.6     $80.0     $66.7     $63.4
Gross profit                       13.3      14.0      13.1       8.2
Net earnings                        4.4       4.8       4.0       0.4
Basic earnings per share            .67       .73       .61       .06
Diluted earnings per share          .66       .72       .60       .06
 
1997
Net sales                         $60.0     $68.7     $78.8     $79.9
Gross profit                        8.1      12.1      13.8      15.0
Net earnings                        1.5       3.9       4.6       4.8
Basic earnings per share            .23       .59       .70       .74
Diluted earnings per share          .23       .59       .69       .72
- ---------------------------------------------------------------------

ADDITIONAL FINANCIAL INFORMATION

   Shareholders may obtain additional information for the year ended December
31, 1998, from the Company's Form 10-K Report filed with the Securities and
Exchange Commission.  A copy of such report may be obtained without charge by
written request to the Secretary, Lufkin Industries, Inc., P.O. Box 849, Lufkin,
Texas 75902-0849.

                                                                               3
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                     MANAGEMENT'S DISCUSSION AND ANALYSIS
                   Lufkin Industries, Inc. and Subsidiaries

RESULTS OF OPERATIONS

   Net sales for 1998 were $283.7 million compared to $287.6 million for 1997.
Net sales for 1996 were $226.0 million.  The Company reported net operating
income of $21.1 million for 1998 and $21.6 million and $14.3 million for 1997
and 1996, respectively.  For 1998, the Company reported net earnings of $13.6
million compared to $14.8 million and $10.5 million for 1997 and 1996,
respectively.

   During 1998, the Company experienced a decline in oil field and foundry
casting revenues while the revenues in the power transmission products and
trailer groups increased.  The annual percentage increases (decreases) in
revenues for the Company's product groups for the three years ended December 31,
1998 were as follows:

                                  Annual increases (decreases) in revenues
- --------------------------------------------------------------------------------
                                         1998    1997    1996
- --------------------------------------------------------------------------------
Oil field pumping units                  (29)%     63%      8%
Power transmission products                3       (3)     22
Foundry castings                         (12)       6       2
Trailers                                  22       43     (36)
- --------------------------------------------------------------------------------
   Total                                  (1)%     27%    ( 9)%
- --------------------------------------------------------------------------------

The sales mix of the Company's products for the three years ended December 31,
1998 was as follows:
 
                                         Percent of total sales
- --------------------------------------------------------------------------------
                                          1998   1997    1996
- --------------------------------------------------------------------------------
Oil field pumping units                    20%     28%     22%
Power transmission products                26      25      32
Foundry castings                           11      12      15
Trailers                                   43      35      31
- --------------------------------------------------------------------------------
   Total                                  100%    100%    100%
- --------------------------------------------------------------------------------

  Oil field revenues decreased 29% to $57.5 million in 1998 from $81.6 million
in 1997.  Oil field revenues for 1996 were $50.0 million.  During 1998, the
Company experienced a decrease in demand for oil field products.  This decline
was due in general to a lower price per barrel of oil and the softening of the
oil market world wide.  The Company booked new orders of $46.0 million for 1998,
compared to $85.0 million and $54.0 million in 1997 and 1996, respectively.  The
decreased bookings are also a result of the softening oil field market.  The
Company ended 1998 with a backlog for oil field products of $3.7 million as
compared to $15.2 million at December 31, 1997.  The backlog at December 31,
1996 was $12.1 million.

  Sales of power transmission products increased 3% to $72.9 million from $70.8
million in 1997.  Power transmission revenues were $73.1 million in 1996.
Contributing to this increase were revenues of $3.3 million generated by the
recent acquisition of COMELOR, a French company manufacturing industrial gear
products.  The 1998 bookings for power transmission products were $64.0 million,
which decreased from $77.3 million in 1997.  Bookings were $67.2 million in
1996.  The decline in bookings and backlog is due to the general softening of
the Asian markets.  The 1998 backlog decreased to $31.1 million as compared to
the 1997 backlog of $36.6 million.  The 1996 year end backlog was $30.1 million.

  Foundry castings revenues in 1998 decreased 12% to $30.3 million from $34.5
million in 1997.  Sales of foundry castings were $32.5 million in 1996.  The
decline in revenues is primarily due to decreased sales of domestically produced
machine tool components.  New orders booked for foundry castings totaled $23.0
million in 1998.  Bookings were $34.9 million and $34.0 million in 1997 and
1996, respectively.  The decline in bookings and backlog is primarily due to
greater pricing pressure from the Far East markets due to the depressed Asian
economies combined with unfavorable changes in the monetary exchange rates.  The
Company ended 1998 with a backlog for foundry products of $8.4 million.  The
year end backlog for foundry products was $15.7 million and $15.3 million for
1997 and 1996, respectively.

4
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                    Lufkin Industries, Inc. and Subsidiaries



RESULTS OF OPERATIONS (CONTINUED)

  During 1998, the Company experienced increased demand for its trailer
products.  Net revenues for 1998 increased 22% to $123.0 million from $100.7
million for 1997.  Revenues from trailer products were $70.4 million for 1996.
The year on year increases of $22.3 million in 1998 and $30.3 million in 1997,
indicated growth in demand for highway trailers over the last three years.  The
1998 backlog for trailer products declined to $44.7 million from $62.8 million
at year end 1997.  The backlog for trailer products was $40.1 million in 1996.
The decline in backlog is due primarily to record levels of shipment activity in
the first half of 1998.  Management expected a decline in bookings in the second
half of 1998 and took appropriate cost cutting actions, including adjusting
workforce levels in the last quarter of 1998 and the first quarter of 1999 as
business dictated. The demand for trailer products is expected to rise in the
first half of 1999.

  Gross profit margins remained stable at 17% for 1998 and 1997, up from 16% in
1996.  This is indicative of the cost management strategies the Company has
utilized in 1998, including the adjustment of workforce levels, as well as
certain non-recurring items discussed below, which compensated for the decline
in the oil market worldwide.

  Selling, General and Administrative expenses (S. G. & A.) were $28.2 million
and 10% of revenues for 1998, increasing slightly from 1997 when S. G. & A.
expenses were $27.9 million and 10% of revenues.  S. G. & A. expenses were $23.2
million and 10% of revenues for 1996.  Year-on-year increases of $0.7 million
and $4.0 million for 1998 and 1997, respectively, are in part due to costs
associated with new acquisitions.

  Net operating income for 1998 was $21.1 million, down 2% from $21.6 million in
1997 and up 48% from $14.3 million in 1996.  The acquisition of the French
company, COMELOR, is expected to be accretive to net earnings in 1999.  This
relative stability in 1998 and 1997 is a result of a favorable upturn in the
trailer market and aggressive cost management in the midst of a declining world
oil market as well as certain non-recurring items discussed below.   Net
earnings were increased by $1.4 million or $0.22 for basic earnings per share
and $0.21 for diluted earnings per share resulting from non recurring gains
related primarily to the sale of certain assets and lower than expected costs on
certain employee benefits and manufacturing items.  The Company plans to
continue to proactively match production with activity while focusing on long
term growth through synergistic acquisitions, exploring new markets and
developing additional products.

  Other income increased $0.1 million to $0.7 in 1998 compared to $0.6 million
in 1997.  Other income for 1996 was $0.4 million.  Investment income decreased
$0.2 million to $1.3 in 1998 as compared to $1.5 million in 1997.  For the 1998
and 1997 fiscal years, investment income has declined from $1.9 million in 1996
due to a decrease in temporary investment balances caused by the use of
temporary investments for acquisition activities.  Interest expense has
increased $0.4 million to $0.7 million in 1998 from $0.3 million in 1997.  The
increase is primarily due to the use of cash and long term debt issued in
relation to the Company's acquisition activities.

  Net earnings for 1998 decreased 8% to $13.6 million or $2.11 for basic
earnings per share and $2.08 for diluted earnings per share compared to $14.8
million in 1997 or $2.26 for basic earnings per share and $2.22 for diluted
earnings per share.  Net earnings for 1996 was $10.5 million or $1.57 for basic
earnings per share and $1.56 for diluted earnings per share.


LIQUIDITY AND CAPITAL RESOURCES

  At December 31, 1998, the Company had net working capital of $61.0 million
compared to $68.9 million in 1997.  During 1998, the Company generated $11.4
million net cash from operations compared to $10.9 million and $19.1 million for
1997 and 1996, respectively.  Accounts receivable decreased $1.5 million to
$38.9 million, down 4% over the 1997 balance of $40.4 million.  The decrease in
receivables is in part due to the reduced volumes of sales in the oil field and
foundry areas, as a result of the weakened oil market and the depressed Far East
markets.  At December 31, 1998, inventories were $48.3 million compared to $30.1
million at year end 1997.   This increase in inventories is due to the
capitalization of certain maintenance and supply items and current year
acquisition activities.  At year end 1998, accrued liabilities were $17.0
compared to $14.0 million at year end 1997.  The $3.0 million increase consisted
primarily of increased payroll and benefits, warranty accruals and commissions
payable.  Dividends of $.72 per share totaling $4.8 million were paid during
1998 compared to $4.5 million and $4.0 million paid in 1997 and 1996
respectively.  In 1998, the Company paid $19.8 million for additions to
Property, Plant and Equipment (P. P. & E.) for capacity expansions and equipment
replacements.  P. P. & E. expenditures for 1997 and 1996 totaled $17.6 million
and $12.4 million, respectively.

                                                                               5
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                    Lufkin Industries, Inc. and Subsidiaries



LIQUIDITY AND CAPITAL RESOURCES (CONTINUED)

  During 1998, the Company completed the acquisition of three different
companies, for a total purchase price of $14.0 million in cash and common stock.
These acquisitions were accounted for under the purchase method.   Related to
these acquisitions, the Company recorded Goodwill, representing the excess of
purchase price over the fair value of the acquired net assets, of $2.1 million
which will be amortized over a period of forty years.  Treasury stock purchases
during 1998 increased to $5.6 million, up from $.5 million in 1997.  Treasury
stock purchases in 1996 were $4.4 million.  Under the Company's current stock
purchase program authorizations of approximately $3.2 million remained at
December 31, 1998 for future treasury stock purchases.

  Net cash provided by financing activities was $5.8 million compared to a net
use of cash in 1997 of $4.1 million.  Cash used in financing activities in 1996
was $8.4 million.  The increase in 1998 is due mainly to the Company's increased
borrowings to finance acquisition activities.  In June 1998 the Company entered
into a credit agreement for a discretionary line of credit totaling $10.0
million.  This agreement was superseded by an agreement in December 1998
increasing the discretionary line of credit to $13.0 million.  At December 31,
1998, $3.5 million remained available.  In recent years, P. P. & E. expenditures
have been financed with internally generated funds.  The Company plans to fund
future P. P. & E. expenditures and its acquisitions program using these two
methods.  The Company believes that its existing working capital and available
borrowings will be sufficient to satisfy 1999 cash requirements.


MARKET RISK

  The company does not utilize financial instruments for trading purposes and
holds no derivative financial instruments which could expose the Company to
significant market risk.  The Company's exposure to market risk for changes in
interest rates relates primarily to its obligation under the discretionary line
of credit, of which $9,500,000 had been borrowed as of December 31, 1998.  The
weighted average interest rate of the $9,500,000 of outstanding indebtedness was
6.0% at December 31, 1998.


IMPACT OF THE YEAR 2000

  YEAR 2000 ISSUE.  Many software applications, hardware and equipment and
embedded chip systems identify dates using only the last two digits of the year.
These products may be unable to distinguish between dates in the year 2000 and
the dates in the year 1900.  That inability, if not addressed, could cause
applications, equipment or systems to fail or provide incorrect information
after December 31, 1999, or when using dates after December 31, 1999.  This in
turn could have an adverse effect on the Company due to the Company's direct
dependence on its own applications, equipment and systems and indirect
dependence on those of other entities with which the Company must interact.

  COMPLIANCE PROGRAM AND COMPANY READINESS.  During 1997, the Company completed
a comprehensive evaluation of its information technology systems to determine
which systems would be affected by the year 2000 ("Y2K").  Following this
evaluation, the Company determined that the purchase of new Y2K compliant
software applications would provide increased commercial and financial
functionality when compared to its existing mature software.  The new
information technology system is substantially complete and should be completely
finished by the third quarter of 1999.

  The Company is currently assessing the Y2K readiness of its non-information
technology systems.  This process is substantially complete and has involved the
testing and evaluation of electrical equipment, embedded microprocessor chips
and machine controls throughout the Company.

  The Company has begun the process of requesting information about Y2K
readiness from its vendors.  This process is about 40% complete.  The Company
believes that the risk of sole-source exposure is minimal since alternate
sources exist for most of the items purchased by the Company.  Utility and
communication providers and financial institutions have been contacted.  They
have responded that they are actively addressing the Y2K issue and feel that the
risk of any interruption of service will be minimal.

  The Company is receiving Y2K compliance questionnaires from its customers
daily, indicating their awareness of the Y2K issue and its possible risks; thus
the Company has chosen not to pursue the Y2K compliance of its customer base.

6
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                    Lufkin Industries, Inc. and Subsidiaries



IMPACT OF THE YEAR 2000 (continued)

  COSTS TO ADDRESS YEAR 2000 COMPLIANCE ISSUES.  It has been estimated that the
capitalizable costs of the new information technology software and its
implementation will be approximately $9.3 million.  The Company has capitalized
such costs of $9.3 million and $4.3 million at December 31, 1998 and 1997,
respectively.  The new information technology system will be depreciated over a
seven year useful life.  The Company estimates that it will have to dispose of
non-Y2K compliant computer equipment with a net book value of approximately $0.1
million.  The non-information technology systems found to be non-compliant were
immaterial in nature and of minimal cost to repair or replace.

  RISK OF NON-COMPLIANCE AND CONTINGENCY PLANS.  The Company recognizes the
possibility that its systems may not be completely Y2K compliant by December 31,
1999. There is also a risk that all third parties upon whom the Company relies
will not be completely Y2K compliant at year end 1999. The effects of any degree
of Y2K non-compliance on revenues, costs and net earnings is not possible to
predict at this time.

  Worst case scenarios include a total shutdown of all operations and a loss of
all revenues in fiscal year 2000; however, the Company believes that the risk of
this worst case scenario is almost non-existent.  Although no assurance can be
given, the Company believes that business interruption will be minimal and
should not result in a material adverse effect on the Company's consolidated
statement of earnings.


FORWARD-LOOKING STATEMENTS AND ASSUMPTIONS

  This Annual Report may contain or incorporate by reference certain forward-
looking statements, including by way of illustration and not of limitation,
statements relating to liquidity, revenues, expenses, margins and contract rates
and terms.  The Company strongly encourages readers to note that some or all of
the assumptions, upon which such forward-looking statements are based, are
beyond the Company's ability to control or estimate precisely, and may in some
cases be subject to rapid and material changes.

                                                                               7
<PAGE>
 
                          CONSOLIDATED BALANCE SHEET
                   Lufkin Industries, Inc. and Subsidiaries


December 31, 1998 and 1997
(Thousands of dollars, except share and per share data)
<TABLE>
<CAPTION>
 
ASSETS                                                            1998        1997
- -------------------------------------------------------------------------------------
<S>                                                             <C>         <C>
Current assets:
Cash                                                            $  1,617    $    796
Temporary investments                                              6,147      17,521
Receivables, net                                                  38,904      40,444
Income taxes receivable                                            3,566           -
Inventories                                                       48,344      30,078
Deferred income taxes                                              2,616       1,911
- -------------------------------------------------------------------------------------
   Total current assets                                          101,194      90,750
 
Property, plant and equipment, net                                95,159      75,478
Prepaid pension costs                                             31,614      27,689
Goodwill                                                           8,148       8,391
Other assets                                                       6,680       7,444
- -------------------------------------------------------------------------------------
     Total assets                                               $242,795    $209,752
- -------------------------------------------------------------------------------------
 
LIABILITIES AND SHAREHOLDERS' EQUITY
- -------------------------------------------------------------------------------------
Current liabilities:
Accounts payable                                                $ 12,017    $  7,169
Short term debt                                                    8,500           -
Current portion of long term notes payable                         2,687         742
Accrued liabilities:
   Payroll and benefits                                            6,687       5,430
   Accrued warranty expenses                                       2,213       1,150
   Taxes payable                                                   2,561       5,071
   Commissions and other                                           5,551       2,334
- -------------------------------------------------------------------------------------
   Total current liabilities                                      40,216      21,896
 
Deferred income taxes                                             16,774      13,588
Post retirement benefits                                          11,381      12,298
Long term notes payable, net of current portion                   11,528       6,665
 
Shareholders' equity:
Common stock, par $1 per share; 20,000,000 shares
   authorized; 6,892,381 and 6,792,381 shares issued               6,892       6,792
Capital in excess of par                                          18,080      15,381
Retained earnings                                                147,413     138,539
Treasury stock, 315,330 shares and 199,399 shares, at cost        (8,014)     (4,244)
Accumulated other comprehensive income
   Cumulative translation adjustment                              (1,475)     (1,163)
- -------------------------------------------------------------------------------------
   Total shareholders' equity                                    162,896     155,305
- -------------------------------------------------------------------------------------
      Total liabilities and shareholders' equity                $242,795    $209,752
- -------------------------------------------------------------------------------------
</TABLE>


See notes to consolidated financial statements.

8
<PAGE>
 
                      CONSOLIDATED STATEMENT OF EARNINGS
                   Lufkin Industries, Inc. and Subsidiaries
<TABLE>
<CAPTION>
 
 
Years ended December 31, 1998, 1997 and 1996
(Thousands of dollars, except per share data)
                                                    1998        1997        1996
- ------------------------------------------------------------------------------------
<S>                                                <C>         <C>         <C>
Net sales                                          $283,705    $287,562    $225,974
 
Cost of sales                                       235,129     238,657     188,877
- ------------------------------------------------------------------------------------
Gross profit                                         48,576      48,905      37,097
 
Selling, general and administrative expenses         28,203      27,886      23,163
Other income, net                                      (677)       (553)       (374)
- ------------------------------------------------------------------------------------
Operating income                                     21,050      21,572      14,308
Investment income                                     1,307       1,531       1,928
Interest expense, net                                  (730)       (259)        (29)
- ------------------------------------------------------------------------------------
Earnings before income taxes                         21,627      22,844      16,207
 
Provision for income taxes                            8,001       7,995       5,756
 
- ------------------------------------------------------------------------------------
Net earnings                                       $ 13,626    $ 14,849    $ 10,451
- ------------------------------------------------------------------------------------
Net earnings per share:
  Basic                                            $   2.11    $   2.26    $   1.57
  Diluted                                          $   2.08    $   2.22    $   1.56
- ------------------------------------------------------------------------------------
</TABLE>

See notes to consolidated financial statements.

                                                                               9
                                                                  
<PAGE>
 
                 CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY
                    Lufkin Industries, Inc. and Subsidiaries

Years ended December 31, 1998, 1997, and 1996
(Thousands of dollars, except share and per share data)

<TABLE>
<CAPTION>
 
 
                                      Common Stock         Capital                              Cumulative      Compre-
                                 ---------------------    In Excess    Retained     Treasury    Translation     hensive
                                  Shares       Amount      Of Par      Earnings       Stock      Adjustment     Income
- -------------------------------------------------------------------------------------------------------------
<S>                              <C>          <C>         <C>        <C>           <C>           <C>            <C> 
Balance, December 31, 1995       6,792,381       6,792      15,367       121,692         (311)      (948)
Comprehensive income
   Net earnings                                                           10,451                                  10,451
                                                                                                                  ------      
Cash dividends,
    $.60 per share                                                        (3,993)
Purchases of treasury stock
    (218,015 shares)                                                                   (4,445)
Exercise of stock options
    (125 shares)                                                                            2
- -------------------------------------------------------------------------------------------------------------
Balance, December 31, 1996       6,792,381       6,792      15,367       128,150       (4,754)      (948)
Comprehensive income
   Net earnings                                                           14,849                                  14,849
   Other comprehensive
     income, net of tax
          Foreign currency
           translation
           adjustment                                                                               (215)           (215)
                                                                                                                  ------      
Comprehensive income                                                                                              14,634
                                                                                                                  ------      
Cash dividends,
    $.68 per share                                                        (4,460)
Purchases of treasury stock
    (20,383 shares)                                                                      (532)
Exercise of stock options
    (54,982 shares)                                             14                      1,042
- -------------------------------------------------------------------------------------------------------------
Balance, December 31, 1997       6,792,381      $6,792     $15,381      $138,539      $(4,244)   $(1,163)
Comprehensive income
   Net earnings                                                           13,626                                  13,626
   Other comprehensive
     income, net of tax
       Foreign currency
         translation
         adjustment                                                                                 (312)           (312)
                                                                                                                  ------      
Comprehensive income                                                                                              13,314
                                                                                                                  ------      
Common stock issued for
      acquisitions                 100,000         100       2,170
Cash dividends,
    $.72 per share                                                        (4,752)
Purchases of treasury stock
    (199,726 shares)                                                                   (5,554)
Exercise of stock options
    (83,795 shares)                                            529                      1,784
- -------------------------------------------------------------------------------------------------------------
Balance, December 31, 1998       6,892,381      $6,892     $18,080      $147,413      $(8,014)   $(1,475)
- -------------------------------------------------------------------------------------------------------------
</TABLE>

See notes to consolidated financial statements.

10
<PAGE>
 
                      CONSOLIDATED STATEMENT OF CASH FLOWS
                    Lufkin Industries, Inc. and Subsidiaries
<TABLE>
<CAPTION>
 
 
Years ended December 31, 1998, 1997 and 1996
(Thousands of dollars)
                                                                     1998        1997        1996
- -----------------------------------------------------------------------------------------------------
<S>                                                                 <C>         <C>         <C>
Cash flows from operating activities:
     Net earnings                                                   $ 13,626    $ 14,849    $ 10,451
     Adjustments to reconcile net earnings to net
          cash provided by operating activities:
                 Depreciation and amortization                         9,213       7,888       6,950
                 Deferred income tax provision                         2,481       3,332       3,699
                 Pension income                                       (3,925)     (3,220)     (3,533)
                 Post retirement benefits                               (917)        106         157
                 (Gain) Loss on sales of property,
                   plant and equipment                                  (199)        136         (45)
                 Increase (decrease) in cash flow from
                   changes in assets and liabilities excluding
                   effects of acquisitions:
                        Receivables, net                               5,504      (5,696)      2,732
                        Income taxes receivable                       (3,566)
                        Inventories                                  (10,843)     (8,253)      3,174
                        Accounts payable                               2,237        (414)     (4,395)
                        Accrued liabilities                           (2,256)      2,140        (126)
- -----------------------------------------------------------------------------------------------------
Net cash provided by operating activities                             11,355      10,868      19,064
 
Cash flows from investing activities:
     Additions to property, plant and equipment                      (19,830)    (17,637)    (12,357)
     Acquisitions of other companies, net of cash acquired            (9,979)     (2,761)          -
     Proceeds from disposition of property,
       plant and equipment                                               604       1,253         282
     (Increase) decrease in other assets                               1,843          22      (1,004)
- -----------------------------------------------------------------------------------------------------
Net cash used in investing activities                                (27,362)    (19,123)    (13,079)
 
Cash flows from financing activities:
     Proceeds from short term debt, net of repayments                 14,500           -           -
     Payments of long term notes payable                                (742)       (143)          -
     Dividends paid                                                   (4,752)     (4,460)     (3,993)
     Proceeds from exercise of stock options                           2,314       1,056           2
     Purchase of treasury stock                                       (5,554)       (532)     (4,445)
- -----------------------------------------------------------------------------------------------------
Net cash provided by (used in) financing activities                    5,766      (4,079)     (8,436)
 
 
Effect of translation on cash and
   temporary investments                                                (312)       (215)          -
- -----------------------------------------------------------------------------------------------------
 
Net decrease in cash and
   temporary investments                                             (10,553)    (12,549)     (2,451)
Cash and temporary investments,
   at beginning of year                                               18,317      30,866      33,317
- -----------------------------------------------------------------------------------------------------
Cash and temporary investments,
   at end of year                                                   $  7,764    $ 18,317    $ 30,866
- -----------------------------------------------------------------------------------------------------
</TABLE>
                                                                            
See notes to consolidated financial statements.

                                                                              11
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries

(1) SUMMARY OF MAJOR ACCOUNTING POLICIES

  PRINCIPLES OF CONSOLIDATION:  The consolidated financial statements include
the accounts of Lufkin Industries, Inc. and Subsidiaries (collectively, the
Company) after elimination of all significant intercompany accounts and
transactions.

  USE OF ESTIMATES: The preparation of the financial statements in conformity
with generally accepted accounting principles requires the use of certain
estimates by management in determining the Company's assets, liabilities,
revenue and expenses.

  TRANSLATION OF FOREIGN CURRENCIES:  Assets and liabilities of foreign
operations are translated into U. S. dollars at the exchange rate in effect at
the end of each accounting period and income statement accounts are translated
at the average exchange rates prevailing during the period.

  TEMPORARY INVESTMENTS:  The Company's temporary investments, consisting of
government securities, have been classified as trading securities which are
carried at market value.  All realized and unrealized gains and losses are
recognized currently in investment income.

 RECEIVABLES:  The following is a summary of the Company's receivable balances:
 
(Thousands of dollars)                    1998       1997
- -----------------------------------------------------------
   Accounts receivable                  $38,772    $37,034
   Notes receivable                         732      4,010
- -----------------------------------------------------------
                                         39,504     41,044
 
   Allowance for doubtful accounts         (600)      (600)
- -----------------------------------------------------------
   Net receivables                      $38,904    $40,444
- -----------------------------------------------------------

  INVENTORIES:  The Company reports its inventories by using the last-in, first-
out (LIFO) and the first-in, first-out (FIFO) methods less reserves necessary to
report inventories at the lower of cost or estimated market.  Inventory costs
include material, labor and factory overhead.  In July, 1998, the Company began
capitalizing certain maintenance and supplies inventories to better match the
estimated cost of such inventories with the related equipment produced.  Such
inventories were capitalized and will be amortized over the three years of their
estimated use and had the effect of increasing net earnings by $0.8 million or
$0.13 for both basic and diluted earnings per share in 1998.

  PROPERTY, PLANT AND EQUIPMENT:  The Company records investments in these
assets at cost.  Improvements are capitalized, while repair and maintenance
costs are charged to operations as incurred.  Gains or losses realized on the
sale or retirement of these assets are reflected in income.  Depreciation for
financial reporting purposes is provided on a straight-line method based upon
the estimated useful lives of the assets.  Accelerated depreciation methods are
used for tax purposes.  The following is a summary of the Company's property,
plant and equipment (P. P. & E.) balances and useful lives:
<TABLE>
<CAPTION>
                                                    Useful
                                                     Life
(Thousands of dollars)                            (in Years)      1998         1997
- --------------------------------------------------------------------------------------
<S>                                               <C>          <C>          <C>
  Land                                                    -    $   2,592    $   2,297
  Land improvements                                   10-25        6,056        5,960
  Buildings                                         12.5-40       58,678       55,687
  Machinery and equipment                            3-12.5      160,266      166,602
  Furniture and fixtures                             5-12.5        5,268        5,711
  Computer equipment                                    3-7       20,138       14,470
- --------------------------------------------------------------------------------------
    Total property, plant and equipment                          252,998      250,727
  Less accumulated depreciation                                 (157,839)    (175,249)
- --------------------------------------------------------------------------------------
    Total property, plant and equipment, net                   $  95,159    $  75,478
- --------------------------------------------------------------------------------------
</TABLE>

  Management continually evaluates whether events or circumstances have occurred
that indicate the remaining estimated useful life of long-lived assets
(including P. P. & E., goodwill, covenants not to compete and other intangible
assets) may warrant revision or that remaining balances may not be recoverable.

  INTANGIBLE ASSETS: The cost over fair value of net tangible assets of acquired
businesses ("Goodwill") is amortized on a straight line method over forty years.
Management periodically evaluates recorded goodwill balances, net of accumulated
amortization, for impairment based on the undiscounted cash flows associated
with the asset compared to the carrying amount of that asset.  Management
believes that there have been no events or circumstances which warrant revision
to the remaining useful life or affect the recoverability of goodwill in any of
its business units.   Other intangible assets, which include covenants not to
compete, are amortized on the straight line method over their estimated lives.
Amortization expense related to Goodwill and other intangible assets was
$290,000, $184,000 and $0 in 1998, 1997 and 1996, respectively.

12
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        
(1) SUMMARY OF MAJOR ACCOUNTING POLICIES (CONTINUED)

  NEW ACCOUNTING PRONOUNCEMENTS: In March 1998, the AICPA issued Statement of
Position (SOP) 98-1, "Accounting for the Costs of Computer Software Developed or
Obtained for Internal Use."  The SOP provides guidance with respect to
accounting for the various types of costs incurred for computer software
developed or obtained for the Company's use.  The Company intends to adopt SOP
98-1 in the first quarter of 1999 and believes that adoption will not have a
significant effect on its consolidated financial statements.

  In April 1998, the AICPA issued SOP 98-5, "Reporting on the Costs of Start-Up
Activities."  At adoption, SOP 98-5 requires the Company to write off any
unamortized start-up costs as a cumulative change in accounting principle and
expense all future start-up costs as they are incurred.  The Company intends to
adopt SOP 98-5 in the first quarter of 1999 and believes that adoption will not
have a significant effect on its consolidated financial statements.

  EARNINGS PER SHARE:  Earnings per share amounts are based on the weighted
average number of shares of common stock and common stock equivalents
outstanding during the period. The weighted average number of shares used to
compute basic and diluted earnings per share for 1998, 1997 and 1996 is
illustrated below:
<TABLE>
<CAPTION>
 
(Thousands of dollars, except share and per share data)         1998         1997         1996
- -------------------------------------------------------------------------------------------------
<S>                                                          <C>          <C>          <C>
Numerator:
 Numerator for basic and diluted earnings per share--
 income available to common shareholders                     $   13,626   $   14,849   $   10,451
- ------------------------------------------------------------------------------------------------- 
Denominator:
 Denominator for basic earnings per share--
 weighted-average shares                                      6,464,680    6,558,536    6,659,751
 Effect of dilutive securities: Employee stock options          100,080      131,423       55,061
 -------------------------------------------------------------------------------------------------
 Denominator for diluted earnings per share--adjusted
 weighted-average shares and assumed conversions              6,564,760    6,689,959    6,714,812
- ------------------------------------------------------------------------------------------------- 
Basic earnings per share                                     $     2.11   $     2.26   $     1.57
- ------------------------------------------------------------------------------------------------- 
Diluted earnings per share                                   $     2.08   $     2.22   $     1.56
- ------------------------------------------------------------------------------------------------- 
</TABLE>

  INCOME TAXES: The Company follows SFAS No. 109, "Accounting for Income Taxes."
Under SFAS No. 109, deferred income tax assets or liabilities are recorded based
on the difference between the financial statement and income tax bases of assets
and liabilities using enacted tax rates.

  OTHER:  Certain prior year amounts have been reclassified to conform with the
current year presentation.

(2) INCOME TAXES

Net deferred income tax assets and liabilities are comprised of the following:
 
(Thousands of dollars)                            1998        1997
- ---------------------------------------------------------------------
Current deferred income tax assets
   Gross assets                                 $  2,616    $  2,663
   Gross liabilities                                   -        (752)
- ---------------------------------------------------------------------
Total, net                                         2,616       1,911
- ---------------------------------------------------------------------
Noncurrent deferred income tax liabilities
   Gross assets                                    7,382       6,999
   Gross liabilities                             (24,156)    (20,587)
- ---------------------------------------------------------------------
Total, net                                       (16,774)    (13,588)
- ---------------------------------------------------------------------
Net deferred income tax liabilities             $(14,158)   $(11,677)
- ---------------------------------------------------------------------

                                                                              13
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries


(2) INCOME TAXES (CONTINUED)

The tax effects of significant temporary differences representing deferred
income tax assets and liabilities are as follows:
 
(Thousands of dollars)                                1998        1997
- -------------------------------------------------------------------------------
Inventories                                        $    859    $    (10)
Prepaid pension costs                               (11,065)     (9,691)
Payroll and benefits                                  1,264       1,144
Accrued warranty expenses                               275         404
Post retirement benefits                              3,984       4,304
Capital loss and tax credit carryforwards               136         157
Depreciation                                         (9,373)     (8,152)
Other, net                                             (238)        167
- -------------------------------------------------------------------------------
Net deferred income tax liabilities                $(14,158)   $(11,677)
- -------------------------------------------------------------------------------
 
The income tax provision for 1998, 1997, and 1996 consisted of the following:

 
(Thousands of dollars)                              1998       1997     1996
- -------------------------------------------------------------------------------
Current                                            $5,520    $4,663    $2,057
Deferred                                            2,481     3,332     3,699
- -------------------------------------------------------------------------------
Total                                              $8,001    $7,995    $5,756
- -------------------------------------------------------------------------------

A reconciliation of the income tax provision as computed at the statutory U. S.
income tax rate and the income tax provision presented in the consolidated
financial statements is as follows:
 
(Thousands of dollars)                              1998       1997    1996
- -----------------------------------------------------------------------------
Tax provision computed at statutory rate           $7,570   $7,995    $5,672
Tax effect of:
   Expenses for which no benefit was realized         206      166       362
   Tax-exempt interest and dividend
      income exclusion                                  -      (11)     (158)
   Other, net                                         225     (155)     (120)
- -----------------------------------------------------------------------------
Provision for income taxes                         $8,001   $7,995    $5,756
- -----------------------------------------------------------------------------

  Cash payments for income taxes totaled $9,615,000, $3,075,000 and $2,178,000
for 1998, 1997 and 1996, respectively.

  For income tax reporting purposes at December 31, 1998, the Company has
foreign tax credit carryforwards of $125,000 and $11,000, which expire December
31, 1999 and 2000, respectively.


(3) INVENTORIES

 Inventories used in determining cost of sales were as follows:

(Thousands of dollars)                                    1998      1997
- --------------------------------------------------------------------------------
Finished goods                                          $ 5,331   $ 5,122
Work in process                                          14,805     6,381
Raw materials                                            28,208    18,575
- --------------------------------------------------------------------------------
Total                                                   $48,344   $30,078
- --------------------------------------------------------------------------------

  Inventories accounted for on a LIFO basis were $32,894,000 and $26,339,000 and
on a FIFO basis were $15,450,000 and $3,739,000 at December 31, 1998 and 1997,
respectively.  Had the FIFO method been used in determining all inventory
values, inventories would have been $18,656,000 and $17,071,000  higher at
December 31, 1998 and 1997, respectively.  Net income was increased by
approximately $400,000 ($.06 per share for both basic and diluted earnings per
share) for 1996 as a result of using the LIFO method as compared to the FIFO
method of accounting for certain inventories.

14
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        

(4) BUSINESS COMBINATIONS

  All acquisitions have been accounted for under the purchase method.  Goodwill,
if any, resulting from each acquisition is being amortized over a forty year
life.  The results of these companies' operations are included in the Company's
Consolidated Statement of Earnings from their respective acquisition dates
forward.  The accompanying balance sheet as of December 31, 1998 includes
estimated allocations of the respective purchase prices which may be subject to
later adjustment.

  The acquisitions of Fannie Lee Mitchell Company and the Nabla Corporation,
both oil field service companies, were completed in July 1997. The Company paid
$2,761,000 in cash, net of cash acquired and issued $7,550,000 of long term
notes payable in conjunction with these acquisitions. Allocations of the
purchase price included goodwill of approximately $5,500,000.

  In April 1998, the Company completed the acquisition of the assets of Lone
Star Machine Shop, another oil field service company, for a cash purchase price
of $2,300,000. Goodwill was $1,080,000.

  In November 1998, the Company completed the acquisition of the French company
COMELOR, a manufacturer of industrial gears, for a purchase price of $7,615,000
in cash and 100,000 shares of common stock.  The fair value of the net assets
acquired exceeded the purchase price, therefore net assets were recorded based
on the purchase price.

  In December 1998, the Company completed the acquisition of the Delta-X
Corporation, a software and hardware manufacturer for the oil field service
industry.  Total cash payments were $4,087,000 and goodwill was $977,000.

  The following unaudited pro forma information presents the results of the
Company's consolidated results of operations had the acquisitions taken place on
the first day of the year being reported:
 
 
                                                         1998          1997
(Thousands of dollars, except per share amounts)      (Unaudited)   (Unaudited)
- -------------------------------------------------------------------------------
    Pro forma revenues                                  $300,409      $316,128
    Pro forma net earnings                                14,375        16,232
    Pro forma earnings per common share:        
        Basic                                               2.22          2.47
        Diluted                                             2.19          2.43

These pro forma results are presented for information purposes only and do not
purport to show the actual results which would have occurred had the business
combinations been consummated on the first day of the year being reported, nor
should they be viewed as indicative of future results of operations.


(5) DEBT OBLIGATIONS

  The Company's short term debt obligations at December 31, 1998 and 1997
consist of the following:
                                                             1998     1997
(Thousands of dollars)
- --------------------------------------------------------------------------
Discretionary line of credit with a domestic bank,
   payable daily, floating interest rate agreed to by
   Company and bank, currently 6.0%, unsecured             $ 9,500       -
Less-Discretionary line of credit, classified as long
   term notes payable and current portion of long
   term notes payable, discussed below                      (6,000)
Note payable to domestic bank, due January 4,
   1999, interest at 6.87%,  unsecured                       5,000       -
- --------------------------------------------------------------------------
                                                           $ 8,500       -
- --------------------------------------------------------------------------

  Subsequent to December 31, 1998 and prior to the issuance of these financial
statements, the Company refinanced $6,000,000 of the discretionary line of
credit into a long term obligation, with interest equal to the current Euro
currency rate plus 1.75% per annum, payable in sixteen quarterly installments of
$375,000 plus interest beginning on the last business day of March, 1999 and
maturing on the last business day of December, 2002, and is unsecured.  As a
result, $4,500,000 was classified as long term notes payable as of December 31,
1998 and $1,500,000 was classified as the current portion of long term notes
payable.

                                                                              15
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        

(5) DEBT OBLIGATIONS (CONTINUED)

The Company's long term notes payable at December 31, 1998 and 1997 consist of
the following:
 
(Thousands of dollars, except payment amounts)                1998      1997
- -------------------------------------------------------------------------------
Notes payable to individuals, interest ranging from 6.50%
 to 6.65%, due in quarterly installments ranging from
 $9,000 to $55,000 with balloon payments at maturity
 ranging from $996,000 to $2,162,000 maturing
  August 2000 to July 2002, unsecured                         $ 6,332   $6,907
Notes payable to individuals, stated interest rate of 0%
 with an imputed interest rate of 6.50%, due in annual
 installments totaling $167,000, maturing August 2000,
 unsecured                                                        333      500
Notes payable to bank, floating interest rate, based on
 TIOP quarterly, currently 3.75%, due in quarterly 
 installments ranging from $49,588 to $122,695 secured 
 by certain assets                                              1,550        -
Discretionary line of credit, subsequently refinanced as
 long term notes payable, discussed above                       6,000        -
Less-current maturities of long term notes payable             (2,687)    (742)
- -------------------------------------------------------------------------------
Total                                                         $11,528   $6,665
- -------------------------------------------------------------------------------

Under the terms of certain notes payable, cash and temporary investments in the
amount of $5,850,000 is restricted for the payment of these notes.

Related party notes payable included in long term notes payable at December 31,
1998 and 1997 consist of the following:
 
(Thousands of dollars)                                        1998      1997
- -------------------------------------------------------------------------------
Note payable to current employee, interest at 6.50% with
  principal and interest payable quarterly                    $ 315    $ 495
Note payable to current employee, stated interest rate of 0%
  with an imputed interest rate of 6.50%, with principal and
  interest payable annually                                     167      250
Less current maturities of long term, related party notes 
  payable                                                      (263)    (263)
- -------------------------------------------------------------------------------
Total                                                         $ 219    $ 482
- -------------------------------------------------------------------------------
 
Principal payments of long term notes payable as of December 31, 1998 are as
follows:
 
(Thousands of dollars)
- -------------------------------------------------------------------------------
Year ending December 31,
1999                                                          2,687
2000                                                          2,624
2001                                                          1,932
2002                                                          6,850
2003                                                             81
2004                                                             41
- -------------------------------------------------------------------------------
Total                                                       $14,215
- -------------------------------------------------------------------------------

Cash payments for interest related to long term notes payable totaled $347,000,
$125,000 and $0 in 1998, 1997 and 1996, respectively.

16
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        

(6) EMPLOYEE STOCK OPTION PLAN

The Company's 1990 Stock Option Plan provides for the granting of options to key
employees to purchase an aggregate of not more than 900,000 shares of the
Company's common stock at fair market value on the date of grant.  One fourth of
granted options generally become exercisable after one year and each year
thereafter.   The options may not be exercised after ten years from the date of
grant.  Outstanding options may be canceled and reissued under terms specified
in the plan.

The following table summarizes activity under the Company's stock option plans:
 
 
                                              1998       1997       1996
- --------------------------------------------------------------------------
Options outstanding, beginning of year      606,766    550,990    447,965
  Granted (per share)
       1996 ($18.125 to $21.75)                                   106,150
       1997 ($21.625 to $39.875)                       121,583
       1998 ($21.750 to $31.875)            154,726
  Exercised (per share)
       1996 ($15.875)                                                (125)
       1997 ($15.31 to $30.00)                         (54,982)
       1998 ($15.875 to $30.00)             (83,795)
  Forfeited (per share)
       1996 ($15.875 to $20.00)                                    (3,000)
       1997 ($15.875 to $22.75)                        (10,825)
       1998 ($15.875 to $38.00)             (11,937)
- --------------------------------------------------------------------------
Options outstanding, end of year            665,760    606,766    550,990
- --------------------------------------------------------------------------
 
  The Company accounts for its stock option plan under APB Opinion No. 25 under
which no compensation cost has been recognized.  Had compensation cost for these
plans been accounted for consistent with SFAS Statement No. 123, "Accounting for
Stock-Based Compensation",  the Company's net earnings and earnings per share
would have been reduced to the following pro forma amounts, (in thousands except
per share data):

                                               1998      1997      1996
- --------------------------------------------------------------------------
Net earnings                    As reported   $13,626   $14,849   $10,451
                                Pro forma     $13,085   $14,569   $10,316
 
Basic earnings per share        As reported   $  2.11   $  2.26   $  1.57
                                Pro forma     $  2.02   $  2.22   $  1.55
 
Diluted earnings per share      As reported   $  2.08   $  2.22   $  1.56
                                Pro forma     $  1.99   $  2.18   $  1.54
- --------------------------------------------------------------------------

  The effects of applying SFAS No. 123 to the pro forma disclosure amounts may
not be indicative of future amounts.  SFAS No. 123 does not apply to options
awarded prior to 1995, and additional awards in future years are anticipated.
The fair value of each option grant is estimated on the date of grant using the
Black-Scholes option-pricing model with the following assumptions:

            Expected dividend yield           2.23% -  3.51%
            Expected stock price volatility  30.03% - 31.42%
            Risk free interest rate           4.59% -  5.81%
            Expected life of options             5  - 10 years

Options granted during 1998 had a weighted average fair value of $7.82 per
option and a weighted average exercise price of $23.54 per option.  At December
31, 1998, 94,686  options authorized remained available to be granted.
                                                                              17
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        
(6) EMPLOYEE STOCK OPTION PLAN (CONTINUED)

The following table summarizes information about stock options outstanding at
December 31, 1998:
<TABLE>
<CAPTION>
 
 
                              Options Outstanding                   Options Exercisable
- ---------------------------------------------------------------------------------------------
                                  Wgtd. Avg.
Range of              Number       Remaining    Wgtd. Avg.       Number        Wgtd. Avg.
Exercise            Outstanding   Contractual    Exercise      Exercisable      Exercise
Prices              at 12/31/98      Life         Price        at 12/31/98       Price
- ---------------------------------------------------------------------------------------------
<S>                 <C>           <C>           <C>            <C>             <C>
$15.31-$18.625          155,670    5.0 years     $17.08          147,670          $17.03
$19.00-$21.750          328,489    8.0 years     $21.24          129,438          $20.81
$27.50-$33.375           95,253    4.7 years     $30.12           69,507          $30.01
$38.00-$39.875           86,348    8.8 years     $38.05           21,587          $38.05
- ---------------------------------------------------------------------------------------------
$15.31-$39.875          665,760    6.9 years     $23.72          368,202          $22.04
=============================================================================================
</TABLE>

(7) STOCK REPURCHASE PLAN

  The Company began a stock repurchase plan under which the Company was
authorized to spend up to $2,100,000 for purchases of its common stock.  An
additional $4,000,000 was authorized for the purchase of common stock and an
additional $8,000,000 was authorized in 1998.  The Company repurchased 199,726
shares at an aggregate cost of $5,600,000 in 1998 and 20,383 shares at an
aggregate cost of $500,000 in 1997.  Repurchased shares are added to treasury
stock and are available for general corporate purposes including the funding of
the Company's employee stock option plan.  Authorizations of approximately
$3,200,000 remained at December 31, 1998.

(8) CAPITAL STOCK

  The Board of Directors adopted a "Shareholder Rights Plan" (the "Plan")
designed to protect against unsolicited attempts to acquire control of the
Company that the Board believes are not in the best interest of the
shareholders.  The Plan provides for the possible issuance of a dividend of one
common stock purchase right for each outstanding share of common stock.  Under
certain conditions, each right may be exercised to purchase one share of common
stock at an exercise price of $75, subject to adjustment.  Under certain
circumstances, the rights entitle holders to purchase the common stock of the
Company or an acquiring company having a value of twice the exercise price of
the rights.  The rights would become exercisable, or transferable apart from the
common stock, ten days after a person or group acquired 20% or more, or
announced or made a tender offer for 30% or more, of the outstanding common
stock.  Under certain circumstances, all rights owned by an acquiring person
would be null and void.  The rights expire on May 31, 2006, and may be redeemed
by the Company at any time prior to the occurrence of certain events at $.05 per
right.

  The Company is authorized to issue 2,000,000 shares of preferred stock, the
terms and conditions to be determined by the Board of Directors in creating any
particular series.

18
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    Lufkin Industries, Inc. and Subsidiaries
                                        
(9) RETIREMENT BENEFITS

  The Company has noncontributory pension plans covering substantially all
employees.  The benefits provided by these plans are measured by length of
service, compensation and other factors, and are currently funded by trusts
established under the plans.  Funding of retirement costs for these plans
complies with the minimum funding requirements specified by the Employee
Retirement Income Security Act.  Plan investment assets are invested primarily
in equity securities, United States government securities and cash equivalents.

  The following tables illustrate the change in benefit obligation, change in
plan assets and funded status of the pension plans:
<TABLE>
<CAPTION>
 
(Thousands of dollars)                                      1998        1997        1996
- -------------------------------------------------------------------------------------------
<S>                                                       <C>         <C>         <C>
Change in projected benefit obligation:
 Projected benefit obligation,  beginning of year         $108,266    $ 93,745    $ 89,510
  Service cost                                               3,391       2,692       2,304
  Interest cost                                              7,430       7,096       6,539
  Amendments                                                     -       2,602           -
  Actuarial gain                                             4,541       7,400         374
  Benefits paid                                             (5,583)     (5,269)     (4,982)
- -------------------------------------------------------------------------------------------
Projected benefit obligation, end of year                 $118,045    $108,266    $ 93,745
- -------------------------------------------------------------------------------------------
Change in plan assets:
  Fair value of plan assets, beginning of year            $156,421    $137,039    $128,361
  Actual return on plan assets                              28,588      24,651      13,660
  Benefits paid                                             (5,583)     (5,269)     (4,982)
- -------------------------------------------------------------------------------------------
Fair value of plan assets, end of year                    $179,426    $156,421    $137,039
- -------------------------------------------------------------------------------------------
Funded status:
  Excess of fair value of plan assets over projected
    benefit obligation                                    $ 61,380    $ 48,155    $ 43,294
  Unrecognized net actuarial gain                          (21,734)    (11,523)     (6,369)
  Unrecognized prior service cost                              945         960      (1,626)
  Unrecognized net transition asset                         (8,977)     (9,903)    (10,830)
- -------------------------------------------------------------------------------------------
Prepaid pension costs                                     $ 31,614    $ 27,689    $ 24,469
- -------------------------------------------------------------------------------------------
Components of net periodic pension cost (income):
  Service cost                                            $  3,391    $  2,692    $  2,304
  Interest cost                                              7,430       7,096       6,539
  Expected return on plan assets                           (13,796)    (12,070)    (13,660)
  Amortization of unrecognized (gain) loss                    (950)       (938)      1,284
- -------------------------------------------------------------------------------------------
Net periodic pension cost (income)                        $ (3,925)   $ (3,220)   $ (3,533)
- -------------------------------------------------------------------------------------------
Weighted-average assumptions at year end:
  Discount rate                                               6.75%        7.0%        7.5%
  Expected return on plan assets                               9.0%        9.0%        9.0%
  Rate of compensation increase                                5.0%        5.0%        5.0%
- -------------------------------------------------------------------------------------------
</TABLE>

  The Company also has defined contribution retirement plans covering
substantially all of its employees.  During the year, the Company made
contributions of 75% of employee contributions up to a maximum employee
contribution of 6% of employee earnings.   Employees may contribute up to an
additional 6% (in 1% increments) which is not subject to match by the Company.
All obligations of the Company are funded through December 31, 1998.  The
Company's expense for these plans totaled $1,994,000, $1,747,000 and $1,610,000
in 1998, 1997 and 1996, respectively.

  The Company sponsors two defined benefit post retirement plans that cover both
salaried and hourly employees.  One plan provides medical benefits, and the
other plan provides life insurance benefits.  Both plans are contributory, with
retiree contributions adjusted periodically.  Under SFAS No. 106 "Employers'
Accounting for Post-retirement Benefits Other than Pensions," the Company
accrues the estimated costs of the plans over the employee's service periods.

                                                                              19
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        

(9) RETIREMENT BENEFITS (CONTINUED)

  The following tables illustrate the change in benefit obligation, change in
plan assets and funded status of the postretirement plans:
<TABLE>
<CAPTION>
 
(Thousands of dollars)                                          1998        1997        1996
- -----------------------------------------------------------------------------------------------
<S>                                                           <C>         <C>         <C>
Accumulated post retirement benefit obligations:
  Retirees                                                    $  7,295    $  7,048    $  7,213
  Fully eligible active plan participants                        1,646       1,295       1,357
  Other active plan participants not yet eligible                3,522       2,977       2,554
- -----------------------------------------------------------------------------------------------
Total accumulated postretirement benefit obligations          $ 12,464    $ 11,320    $ 11,124
- -----------------------------------------------------------------------------------------------
Change in accumulated postretirement benefit obligation:
  Accumulated postretirement benefit obligation,
     beginning of year                                        $ 11,320    $ 11,124    $ 10,785
  Service cost                                                     247         162         156
  Interest cost                                                    817         788         801
  Participant contributions                                        859         839         797
  Actuarial loss                                                 1,472         965         183
  Benefits paid                                                 (2,251)     (2,558)     (1,598)
- -----------------------------------------------------------------------------------------------
Accumulated postretirement benefit obligation,
   end of year                                                $ 12,464    $ 11,320    $ 11,124
- -----------------------------------------------------------------------------------------------
Fair value of plan assets                                            -           -           -
- -----------------------------------------------------------------------------------------------
Funded status:
  Excess of total accumulated post retirement
    benefit obligations over fair value of plan assets        $(12,464)   $(11,320)   $(11,124)
  Unrecognized net actuarial (gain) loss                         1,083        (978)     (1,068)
- -----------------------------------------------------------------------------------------------
Accrued post retirement benefit cost                          $(11,381)   $(12,298)   $(12,192)
- -----------------------------------------------------------------------------------------------
Components of net periodic postretirement benefit cost:
  Service cost                                                     247         162         156
  Interest cost                                                    817         788         801
- -----------------------------------------------------------------------------------------------
Net periodic post retirement benefits cost                    $  1,064    $    950    $    957
- -----------------------------------------------------------------------------------------------
Weighted average assumptions at year end:
  Discount rate                                                   6.75%        7.0%        7.5%
- -----------------------------------------------------------------------------------------------
</TABLE>

  The Company's post retirement health care plan is unfunded.  For measurement
purposes, the submitted claims medical trend was assumed to be 9.25% in 1997 and
10% in 1996.  Thereafter, the Company's obligation is fixed at the amount of the
Company's contribution for 1997.

20
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   Lufkin Industries, Inc. and Subsidiaries
                                        

(10) BUSINESS SEGMENT INFORMATION

  The Company operates with four business segments--oil field, power
transmission, foundry and trailer.  In keeping with the Company's strategic
objective of vertical integration, the Company's foundry segment also provides
its oil field and power transmission segments with commercial castings.  The
four operating segments are supported by a common corporate group.  The
accounting policies of the segments are the same as those described in the
summary of significant accounting policies.   Corporate expenses and assets are
allocated to the operating segments primarily based upon third party revenues.
The following is a summary of key business segment and product group
information:
<TABLE>
<CAPTION>
 
(Thousands of dollars)                                                                          1998          1997         1996
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>           <C>          <C>
SALES:
    Oil field                                                                                   $ 57,523     $ 81,571     $ 49,952
    Power transmission                                                                            72,882       70,786       73,127
    Foundry                                                                                       30,302       34,512       32,487
    Trailer                                                                                      122,998      100,693       70,408
- -----------------------------------------------------------------------------------------------------------------------------------
Total sales                                                                                     $283,705     $287,562     $225,974
- -----------------------------------------------------------------------------------------------------------------------------------
SALES BY GEOGRAPHIC REGION:
   United States                                                                                $243,262     $234,334     $182,724
   Europe                                                                                          7,004        3,714        2,980
   Canada                                                                                         10,940       19,012       12,470
   Latin America                                                                                  11,045       19,316       16,326
   Other                                                                                          11,454       11,186       11,474
- -----------------------------------------------------------------------------------------------------------------------------------
Total sales                                                                                     $283,705     $287,562     $225,974
- -----------------------------------------------------------------------------------------------------------------------------------
OPERATING INCOME:
   Oil field                                                                                    $  2,880     $ 11,785     $  5,557
   Power transmission                                                                              7,265        1,012        3,815
   Foundry                                                                                         1,123        1,515          390
   Trailer                                                                                         9,782        7,260        4,546
- -----------------------------------------------------------------------------------------------------------------------------------
Total operating income                                                                          $ 21,050     $ 21,572     $ 14,308
- -----------------------------------------------------------------------------------------------------------------------------------
ASSETS:
   Oil field                                                                                      51,318       46,902       26,500
   Power transmission                                                                             70,950       54,095       53,769
   Foundry                                                                                        24,958       19,062       16,274
   Trailer                                                                                        31,108       23,761       16,125
   Corporate                                                                                      64,461       65,932       73,257
- -----------------------------------------------------------------------------------------------------------------------------------
Total assets                                                                                    $242,795     $209,752     $185,925
- -----------------------------------------------------------------------------------------------------------------------------------
CAPITAL EXPENDITURES:
   Oil field                                                                                    $  5,485     $  2,061     $  5,114
   Power transmission                                                                              2,368        4,514        2,468
   Foundry                                                                                         4,657        5,879        3,713
   Trailer                                                                                           755          703          634
   Corporate                                                                                       5,214        4,480          428
- -----------------------------------------------------------------------------------------------------------------------------------
Total capital expenditures                                                                      $ 18,479     $ 17,637     $ 12,357
- -----------------------------------------------------------------------------------------------------------------------------------
DEPRECIATION/AMORTIZATION:
   Oil field                                                                                    $  2,140     $  1,596     $  1,109
   Power transmission                                                                              4,014        3,845        3,449
   Foundry                                                                                         1,213        1,184        1,064
   Trailer                                                                                           823          820          848
   Corporate                                                                                       1,023          443          480
- -----------------------------------------------------------------------------------------------------------------------------------
Total depreciation/amortization                                                                 $  9,213     $  7,888     $  6,950
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                              21
<PAGE>
 
                            LUFKIN INDUSTRIES, INC.
                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
                   Lufkin Industries, Inc. and Subsidiaries


To the Shareholders of Lufkin Industries, Inc.:

   We have audited the accompanying consolidated balance sheets of Lufkin
Industries, Inc. (a Texas corporation) and subsidiaries as of December 31, 1998
and 1997, and the related consolidated statements of earnings, shareholders'
equity and cash flows for each of the three years in the period ended December
31, 1998.  These consolidated financial statements are the responsibility of the
Company's management.  Our responsibility is to express an opinion on these
consolidated financial statements based on our audits.

   We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the consolidated financial statements are
free of material misstatement.  An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation.  We believe that our audits provide a reasonable basis
for our opinion.

   In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the consolidated financial position of
Lufkin Industries, Inc., and subsidiaries as of December 31, 1998 and 1997, and
the consolidated results of their operations and their cash flows for each of
the three years in the period ended December 31, 1998, in conformity with
generally accepted accounting principles.


ARTHUR ANDERSEN LLP


/s/ ARTHUR ANDERSEN LLP

Houston, Texas
February 17, 1999

<PAGE>
 
                                                                    EXHIBIT (21)


                   LUFKIN INDUSTRIES, INC. AND SUBSIDIARIES

                        SUBSIDIARIES OF THE REGISTRANT

                                                              Name under which 
                                          Jurisdiction        such subsidiary
Name of subsidiary                       of Incorporation     does business
- ------------------                       ----------------     ----------------

Lufkin Industries Canada, Ltd.           Province of Alberta,     Same
                                          Canada

P. T. Lufkin Indonesia                   Republic of Indonesia    Same

Lufkin Industries FSC, Inc.              Barbados                 Same

Lufkin Industries Europe, Bv.            The Netherlands          Same

Lufkin Japan, L. L. C.                   Japan                    Same

Lufkin France                            France                   Same

<PAGE>
 
                                                                    EXHIBIT (23)

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation by
reference of our report dated February 17, 1999, incorporated by reference in
this Form 10-K for the year ended December 31, 1998, into the Lufkin Industries,
Inc. previously filed Form S-8 Registration Statements File No. 33-36976 and
File No. 33-62021.



ARTHUR ANDERSEN LLP


/s/ ARTHUR ANDERSEN LLP


Houston, Texas
March 25, 1999


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>                    
<PERIOD-TYPE>                   YEAR                   
<FISCAL-YEAR-END>                          DEC-31-1998 
<PERIOD-START>                             JAN-01-1998 
<PERIOD-END>                               DEC-31-1998 
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<SECURITIES>                                     6,147 
<RECEIVABLES>                                   39,504 
<ALLOWANCES>                                     (600) 
<INVENTORY>                                     48,344 
<CURRENT-ASSETS>                               101,194 
<PP&E>                                         252,998 
<DEPRECIATION>                               (157,839) 
<TOTAL-ASSETS>                                 242,795 
<CURRENT-LIABILITIES>                           40,216 
<BONDS>                                              0 
                                0 
                                          0 
<COMMON>                                         6,892 
<OTHER-SE>                                     156,004 
<TOTAL-LIABILITY-AND-EQUITY>                   242,795 
<SALES>                                        283,705 
<TOTAL-REVENUES>                               283,705 
<CGS>                                          235,129 
<TOTAL-COSTS>                                  235,129 
<OTHER-EXPENSES>                                28,203 
<LOSS-PROVISION>                                     0 
<INTEREST-EXPENSE>                                 730 
<INCOME-PRETAX>                                 21,627 
<INCOME-TAX>                                     8,001 
<INCOME-CONTINUING>                                  0 
<DISCONTINUED>                                       0 
<EXTRAORDINARY>                                      0 
<CHANGES>                                            0 
<NET-INCOME>                                    13,626 
<EPS-PRIMARY>                                     2.11 
<EPS-DILUTED>                                     2.08 
        

</TABLE>


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