... 1) CARBON STEEL: ASTM A106 GR. B & C/ ASTM A53 GR. B & C/, ASTM A333 GR. 3/6 & API-5L ... X60, X65, X70, X80, PSL 1,2.High temp grade: A, B, C.Low temp grade: 1, 3, 4, 6, 7, 8 ... seals, or as per customers' requirements11) Payment: L/C or T/T in Advance after negotiating with customers ... Please don't hesitate to contact us, your inquiry will be highly appreciated and ...