... : Round 4.Standard: ASTM / ASME, GB, DIN, JIS, T14975 stainless and seamless steel pipeGRADE : 200 (Ni : 0.8%), 201B (Ni : 3 ... .T: SCH5S, SCH10S,SCH40S,SCH80S,SCH160S,etc. (0.5-40 mm) Or non-regular size to be tailored as required.typeOuter diameter ... .200.20~0.551.20~1.600.0450.045/// stainless and seamless steel pipe