Ball Valves, Gate Valves, Globe Valves manufacturer / supplier in China, offering J-Valve Duplex F51/F316 Flange Control Gas Valve 2*1/2′ 300lb Control Gas Sour Service Dbb Ball Valve, J-Valve API 6D Class 600 F53 Super Duplex Steel 1/2"Full Port 2PC Design Anti-Corrosion Ball Valve, J-Valves Nace Mr0175 Inconel 825 Class 300 Full Port API 6D Alloy Steel Ball Valve and so on.