... Steel Pipe 1)TP304,TP304L,TP316L,TP321,TP310S 2)O.D: 6-630mm 3)W.T:0.8-50mm DescriptionASTM A312/ A213 ... : 0.8%), 201B (Ni : 3%), 201H (Ni : 5%)301 (Ni : 6%), 304, TP304, TP304L/304L, 321, TP321, 316, TP316L, 316L, 316Ti317 ... . StandardsASTM / ASME, GB, DIN, JIS, T14975, etc.SpecificationO.D: 1/4" - 32" (inch) (6-830 mm)W.T: SCH5S, SCH10S,SCH40S,SCH80S ...