... stainless steel pipe 1.Standard: ASTM, JIS, DIN, EN. 2.OD: 6-530mm 3.TK:0.8-28mm 4.Surface:Polished, frosting 310 stainless steel ... technologySeamless steel pipeWelded steel pipeSurface treatmentPolishing or not The stainless steel barstandardASTM, ... GBmaterial201,202,301,304,316,316L,316LN,317,317L,309,309S,310,310S,430,409specificationRound Square rectangle ...