<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Financial Statements contained in Item 1 of Form 10-Q for the period ended
June 30, 2000 and is qualified in its entirety by reference to such
financial statements.
Figures are rounded to the nearest 100,000 (except EPS).
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 6,300
<SECURITIES> 0
<RECEIVABLES> 227,400
<ALLOWANCES> 0
<INVENTORY> 131,300
<CURRENT-ASSETS> 391,400
<PP&E> 869,700
<DEPRECIATION> 545,500
<TOTAL-ASSETS> 798,400
<CURRENT-LIABILITIES> 218,200
<BONDS> 75,100
0
0
<COMMON> 22,100
<OTHER-SE> 441,100
<TOTAL-LIABILITY-AND-EQUITY> 798,400
<SALES> 493,900
<TOTAL-REVENUES> 493,900
<CGS> 352,200
<TOTAL-COSTS> 352,200
<OTHER-EXPENSES> 89,900
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 5,600
<INCOME-PRETAX> 50,000
<INCOME-TAX> 17,000
<INCOME-CONTINUING> 33,000
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 33,000
<EPS-BASIC> 1.48
<EPS-DILUTED> 1.48
</TABLE>