Design standard: API 602, ANSI B16.34, BS 5352, GB/T12224, GB/T12228, GB/T12234.
Socket welding end: ANSI B16.11, JB/T 175-95.
Screw end: ANSI B1.20.10 (NPT), GB/T7306-87 (RC).
Butt welding end: ANSI B16.25, GB/T12224.
Flange end: ANSI B16.5, JB/T82.1-82.4-94.
Face to face (Flange): ANSI B16.10, JB/T97-95.
Construction: BB or WB, OS & Y.
Inspect and test: API 598, GB/T13924, JB/T9092.
Body material: ASTM A105, ASTM A182 LF2, ASTM A182 F5, ASTM A182 F11, ASTM A182 F22, ASTM A182 F304, ASTM A182 F316, ASTM A182 F304L, ASTM A182 F316L, ASTM A182 F347, ASTM A182 F321, ASTM A182 F51, Monel, Alloy 20.