Process: (Cold Forming ) Sizes: St(Seamless Type): 1/2" -20" (DN15-DN500) (Welded Type): 1/2" -48' (DN15-DN1200) 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; Sch10-Sch160; XS-XXS Materials: TP304; TP304H; TP304L; TP316; TP316L; TP321: TP321H: TP317L; TP310S; TP347H