
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1998
<CASH>                                           1,621
<SECURITIES>                                         0
<RECEIVABLES>                                   69,953
<ALLOWANCES>                                     2,400
<INVENTORY>                                     92,921
<CURRENT-ASSETS>                               176,012
<PP&E>                                         650,968
<DEPRECIATION>                                 240,108
<TOTAL-ASSETS>                                 612,703
<CURRENT-LIABILITIES>                          118,540
<BONDS>                                        393,040
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           328
<OTHER-SE>                                      35,275
<TOTAL-LIABILITY-AND-EQUITY>                   612,703
<SALES>                                        965,650
<TOTAL-REVENUES>                               965,650
<CGS>                                          773,129
<TOTAL-COSTS>                                  773,129
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                   184
<INTEREST-EXPENSE>                              24,693
<INCOME-PRETAX>                                130,768
<INCOME-TAX>                                    49,567
<INCOME-CONTINUING>                             81,201
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    81,201
<EPS-PRIMARY>                                     2.41
<EPS-DILUTED>                                     2.39
        

</TABLE>
