... /304H/316/316L/ 316H/310S/310H/317/317L/ 347/347H .4) EXOTIC ALLOYS : NICKEL, NICKEL ALLOYS, DUPLEX, SUPER DUPLEX, TITANIUM, ... military, chemical industry, environment protection, traffic, food industry, medical equipment.9) Standard: Seamless – ASTM A106, API 5L, ASTM A179, , ASTM A53 ... grade: A, B, C.Low temp grade: 1, 3, 4, 6, 7, 8, 9, 10, 11 And some other international standard and grade ...