Plug Valve, Gate Valve, Choke and Kill Manifold manufacturer / supplier in China, offering API 6A Fls-R 4-1/16" 15000psi Manual Ball Screw Operation Gate Valve, API 6A Bx R Series Metallic Ring Joint Gasket, API 6A Fls Type 7-1/16" 15000psi Gate Valve Seat Seal Ring and so on.