
<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          17,110
<SECURITIES>                                         0
<RECEIVABLES>                                   71,067
<ALLOWANCES>                                       895
<INVENTORY>                                     84,180
<CURRENT-ASSETS>                               183,563
<PP&E>                                         379,293
<DEPRECIATION>                                 143,857
<TOTAL-ASSETS>                                 469,426
<CURRENT-LIABILITIES>                           98,779
<BONDS>                                          4,774
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        19,853
<OTHER-SE>                                     304,753
<TOTAL-LIABILITY-AND-EQUITY>                   469,426
<SALES>                                        111,368
<TOTAL-REVENUES>                               120,959
<CGS>                                           86,430
<TOTAL-COSTS>                                   86,430
<OTHER-EXPENSES>                                 2,803
<LOSS-PROVISION>                                    74
<INTEREST-EXPENSE>                                  95
<INCOME-PRETAX>                                 15,988
<INCOME-TAX>                                     6,235
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     9,753
<EPS-PRIMARY>                                     0.49
<EPS-DILUTED>                                     0.48
        

</TABLE>
