Plug Valve, Gate Valve, Choke and Kill Manifold manufacturer / supplier in China, offering API 6A 5-1/8" 20000psi Drilling Adapter Spools or Spacer Spools or Riser Flange, API 6A Hh Material Wellhead Assemblies and Christmas Tree, Wellhead Test Drilling Mud Manifold and API 16c Choke Kill Manifold and so on.