... Export standard packagingGood quality of stainless steel welded pipe: ProductStainless steel welded pipe StandardASTM A554, A249, A269 and A270, A312,A778Material ... / Hairline400#, 600# or 800# Mirror finishApplicationfree cutting, improved machine ability, heading, refractory, general useTestSquash test, extended test, water ... Hardness (HV)<253<253<200<200 Good quality 304 stainless steel welded pipe