... on 2.: 304, 304L, 310S, 316,316L , 317L, 321 3.OD:6mm- 630mm polished stainless steel tubeStandards:ASTM A312,ASTM ... A213,ASTM A269 DIN17456,DIN17458, EN10216-5 Steel Grade: 304, 304L, 310S, 316 ... ,316L , 317L, 321Outside Diametre: 6mm - 630mm (stainless steel seamless pipe)Wall Thickness ...