... test Grades: 321, 304, 304L, 316, 316L,etc. Seamless Stainless Steel TubeFeatures:1)SpecificationOuter Diameter: Φ8 - 219mmWall Thickness: 1.0 - 8 ... , TP316/TP316L,TP321/321H3)Standards:GB, DIN, SA/ASTM, JIS, non-standard, etc4) Process method:cold drawing, cold rolling5)Surface finish ...