Plug Valve, Gate Valve, Choke and Kill Manifold manufacturer / supplier in China, offering API 6A Wellhead 3-1/16′′5000psi Gate Valve Material Class AA Psl2, API 6A Wellhead 3-1/16′′5000psi Gate Valve Material Class AA Psl3, API 6A Wellhead 3-1/16′′5000psi Gate Valve Material Class Bb Psl2 and so on.