China Valves 1.Design: API6D, API600,ANSE B16.34 2.Material:WCB, ... ,CF3M,Etc 3.Bolted Bonnet,Flanged Ends,Rising Stem. China Valves Cast Steel Electric Gate Valve,Bolted Bonnet,Flanged Ends,Rising ... ), CF3M(316L), etc.Driving styles: manual/bevel gear/ electric/pneumatic/hydraulic,etc Test PressureTest ItemShell TestSeal TestBack Seal TestAir Seal TestMediumWaterAirUnitMpaIbf ...