... .Standard:ASTM AISI EN Best quality stainless steel pipe Itemstainless steel pipeDescriptionStainless steel pipe,stainless steel seamless tube,stainless steel welded tube,stainless steel tube,stainless steel round tube ,stainless steel square tubeStandardASTM,AISI,SUS,JIS,EN ... ,309S,310S,316,316L,316N,316LN,316Ti,317,317L,321,347H,347,etc.Finish(Surface)Pickled finish Mill Finish,80grit,160grit ...