Stainless Steel Pipes and TubesSTANDARD:General Pipes and Tubes: ASTM A213; ASTM 312; En10216; DIN17456; DIN17458Duplex Tubes: ASTM A789; ASTM A790 Ni-Alloy: ASTM B163; ASTM B423; ASTM B407; ASTM B668GRADES:General Pipes and Tubes:  TP304, TP304L, TP304H, TP316, TP316H, TP316Ti, TP316L, TP321,TP321H, TP347H, TP347HFG, 904L, TP310H, TP310S, TP317, TP317L,Duplex Tubes:  S31803; S32205; S31500; S32750 Ni-Alloy:  N08825, N08904, N08028, N08800SIZE RANGE:Stainless Steel Pipes and Tubes:  6-830mm O.D. x 0.5-45mm ThicknessU-Tubes: 12-38mm O.D. x 0.5-4 mm thickness