... POLISH,ACID,HL,200# polishing, 400 # polishing 202 welded tube Stainless steel is a production which not easy ... Vibration,Bead Blast,EmbossedThe stainless steel pipestandardASTM,GBmaterial201,202,301,304,316,316L,316LN,317,317L, ... pipeSurface treatmentPolishing or notThe stainless steel barstandardASTM,GBmaterial201,202,301,304,316,316L,316LN,317,317L, ... offer warm-hearted service to you ! 202 welded tube