design specification of check valve:GB/T12235、GB/T12236,Structure Length GB/T12221,joint flange JB/T79,Test and Inspection JB/T9092,Pressure and TemperatureGB/T9131,Product IDGB/T12220,Supply specificationJB/T7928
American standard check valve
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American standard check valve detailed design specification of check valve:GB/T12235、GB/T12236,Structure Length GB/T12221,joint flange JB/T79,Test and Inspection JB/T9092,Pressure and TemperatureGB/T9131,Product IDGB/T12220,Supply specificationJB/T7928 |