Plug Valve, Gate Valve, Choke and Kill Manifold manufacturer / supplier in China, offering API 6A Wellhead 3-1/8′′3000psi Gate Valve Material Class Ee1.5, API 6A Wellhead 2-9/16′′10000psi Gate Valve Used in Oilfield, API 6A Wellhead 4-1/16′′10000psi Gate Valve Used in Oilfield and so on.