<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEET AT JUNE 30, 1997 AND THE CONDENSED
CONSOLIDATED STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDING JUNE 30, 1997 AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                       
<PERIOD-TYPE>                                    6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                               0
<SECURITIES>                                         0
<RECEIVABLES>                                   97,230
<ALLOWANCES>                                         0
<INVENTORY>                                     50,906
<CURRENT-ASSETS>                               154,949
<PP&E>                                         256,101
<DEPRECIATION>                                 156,817
<TOTAL-ASSETS>                                 317,035
<CURRENT-LIABILITIES>                           94,921
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         5,137
<OTHER-SE>                                     141,080
<TOTAL-LIABILITY-AND-EQUITY>                   317,035
<SALES>                                        227,720
<TOTAL-REVENUES>                               227,720
<CGS>                                          185,468
<TOTAL-COSTS>                                  185,468
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,888
<INCOME-PRETAX>                                  7,177
<INCOME-TAX>                                     3,442
<INCOME-CONTINUING>                              3,735
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,735
<EPS-PRIMARY>                                     0.55<F1>
<EPS-DILUTED>                                     0.54<F1>
<FN>
<F1>RESTATED TO CONFORM TO FASB STATEMENT 128 REQUIREMENTS
</FN>