... rolledSurface treatment2B,BA,8K,No.1,Etching,Hairline,Satin,Mirror,Vibration,Bead Blast,Embossed The stainless steel pipestandardASTM,GBmaterial201,202,301,304,316 ... #,240#,320#400#,600#), Hairline,aid pickling and so onProduction technologySeamless steel pipeWelded steel pipeSurface treatmentPolishing or not The stainless steel barstandardASTM,GBmaterial201,202,301 ...