Plug Valve, Gate Valve, Choke and Kill Manifold manufacturer / supplier in China, offering API 16c Fmc/Spm 4" Style 80 Fig1502 Swivel Joint, API 16c Choke Manifold and Kill Manifold, API 6A Fls Type 2-1/16" 10000psi Gate Valve Seat Seal Ring and so on.