
<TABLE> <S> <C>

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<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                           8,027
<SECURITIES>                                         0
<RECEIVABLES>                                   70,770
<ALLOWANCES>                                       951
<INVENTORY>                                     93,252
<CURRENT-ASSETS>                               183,463
<PP&E>                                         390,945
<DEPRECIATION>                                 150,827
<TOTAL-ASSETS>                                 473,984
<CURRENT-LIABILITIES>                           62,992
<BONDS>                                         59,682
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        19,053
<OTHER-SE>                                     286,318
<TOTAL-LIABILITY-AND-EQUITY>                   473,984
<SALES>                                        227,326
<TOTAL-REVENUES>                               238,005
<CGS>                                          176,672
<TOTAL-COSTS>                                  176,672
<OTHER-EXPENSES>                                 5,938
<LOSS-PROVISION>                                   143
<INTEREST-EXPENSE>                                 567
<INCOME-PRETAX>                                 22,472
<INCOME-TAX>                                     8,765
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    13,707
<EPS-PRIMARY>                                     0.70
<EPS-DILUTED>                                     0.69
        

</TABLE>
