300 Series Seamless Stainless Steel Pipe/cold draw Size: OD: 4mm-426mm, WT: 1mm-50mm Material: 301,304,316L, 310,310S, 321 Steel Grade Available:1) Austenite Steel: 304, 304L, 316, 316L, 316Ti, 321, 321H, 310S, 317L, 347, 904L2) Marten site Steel: 410, 420, 4313) Duplex Steel: UNS S31803, S322054) Precipitations Hardening Steel: 17-4PH(UNS S17400)Standard:GB, ASTM A312/A312M, ASTM A213/A213M, ...