... Finish: POLISH,ACID,HL,200# polishing, 400 # polished SS 304 seanless tube Stainless steel is a production which not easy ... ,Bead Blast,EmbossedThe stainless steel pipestandardASTM,GBmaterial201,202,301,304,316,316L,316LN,317,317L,309,309S,310,310S ... steel barstandardASTM,GBmaterial201,202,301,304,316,316L,316LN,317,317L,309,309S,310,310S,430,409specificationRoundSquarerectangle SS 304 seanless tube