... , 316, 316L, etc Stainless steel welded tube / pipe1. Standard: GB, ASTM, JIS, DIN, EN, AISI2. Material: 304, 304L, ... Stainless Steel Industrial Piping(JIS G 3459) 1. Chemical Composition MaterialChemical Composition %JIS G 3459CSiMnPSNiCrMoSUS 304≤0.08≤1 ... Cabove Quench3. Tolerance ItemStandardOuter Diameter(D)mmDiameter TolerancemmTicknessmmRoundnessStraightnessLengthmmJIS G 34599.52~28.58+0/-0.37≤1. ...