Chinese Valve Standards - Chinese standards for steel, cast iron and metal valves

GB12220: General valve - marking

GB12221: Flanged ends metal valve - face-to-face dimensions

GB12222: Multi-turn valve - connection of driving device

GB12223: Part-turn valve - connection of driving device

GB12224: Steel valve - general requirements

GB12225: General valve - copper alloy casting ware technology requirements

GB12226: General valve - gray casting iron technology requirements

GB12227: General valve - ductile casting iron technology requirements

GB12228: General valve - carbon forging steel technology requirements

GB12229: General valve - carbon casting steel technology requirements

GB12230: General valve - a casting steel technology requirements

GB12232: General valve - flanged ends iron gate valve

GB12233: General valve - iron gate valve and lift check valve

GB12234: General valve - flanged and butt-welding ends copper gate valve

GB12235: General valve - flanged steel stop and lift check valve

GB12236: General valve - steel swing check valve

GB12237: General valve - flanged and butt-welding ends steel ball valve

GB12238: General valve - flanged and wafer ends butterfly valve

GB12239: General valve - diaphragm valve

GB12240: General valve - iron plug valve

GB12241: Safety valve - general requirements

GB12242: Safety valve - characteristic testing solution

GB12243: Direct spring loaded safety valve

GB12244: Pressure reducing valve - general requirements

GB12245: Pressure reducing valve - characteristic testing solution

GB12246: Pilot operated pressure reducing valve

GB12247: Steam trap valve - classification

GB12248: Steam trap valve - technology terms

GB12249: Steam trap valve - marking

GB12250: Steam trap valve - face-to-face dimensions

GB12251: Steam trap valve - testing solution

GB/T1392: General valve - pressure testing

GB/T13932: General valve - iron swing check valve

GB/T15185: Iron and copper ball valve

GB/T15188.1: Valve face-to-face dimensions - butt-welding ends valve

GB/T15188.2: Valve face-to-face dimensions - wafer ends valve

GB/T15188.3: Valve face-to-face dimensions - female screw-down valve

GB/T15188.4: Valve face-to-face dimensions - male screw -down valve