Process: 1/2" -16"(Cold Forming ) 18" - 24"(Argon Arc Welding ) Sizes : 1/2" -24" (DN15-DN500) Standards: GB/T12459, GB/T13401, SH3408, SH3409; ASME/ANSI B16.9, B16.28, ASTM A403, MSS SP-43; DIN 2605, DIN2609, DIN2615, DIN2616; JIS B2311, JIS B2312, JIS B2313 Schedules: Sch5S-Sch80S;Sch 10-Sch40; Materials: TP304; TP304H; TP3O4L; TP316; TP316L; TP321: TP321H; TP317L; TP310S; TP347H