... & C/ ASTM A53 GR. B & C/, ASTM A333 GR. 3/6 & API-5L-GR. B/X42/X46/X52/X60/X65/X75 ... 317/317L/ 347/347H & ASTM A358 CL.1/2/3/4/5, GR.304/304L/304H/316/316L/ 316H/310S/310H ... /317/317L/ 347/347H .4) EXOTIC ALLOYS : NICKEL, NICKEL ALLOYS, DUPLEX, SUPER DUPLEX, TITANIUM, ... grade: A, B, C.Low temp grade: 1, 3, 4, 6, 7, 8, 9, 10, 11 And some other international standard and grade ...