... description1. Grades: 201, TP304, 304L, 316L, TP316L, 316Ti, 317, 317L, 321 etc. 2. Technical standards: 1)ASTM A312/A312M ASTM A213 ... are authenticated by ISO9001: 2000. The main materials are 201, 304, 304L, 321, 316, 316L, 317, 310s and so on. The specification ... -2008,GB5310-2008,GB9948-2006, etc.Material /Grade201/304/L/H, 316/L, 321, 309S, 310S, 904L, etc.TypeSeamless Austenitic Stainless steel ...