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Recent content by downhillbill

  1. downhillbill

    nitrogen purge blk steel pipe S.M.A.W. welding

    gov spec requiring nitrogen purge while weld is being performed.gov spec ref's to ASME B31.1 and B31.9. Weld procedure QW-482 smaw, joint design vee,backing none,base metal (QW-403) P-# 1,,GRP # 1,Spec SA 106 GR-B,base metal .0625 to .436 all dia with in T range,,filler metals QW404,spec. no...
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