Valve, Ball Valve, Check Valve manufacturer / supplier in China, offering Oilfield High Pressure NPT or Lp Ball Valves 2000psi 3000psi 5000psi Wcb or Ductile Iron or Alloy Steel or Duplex Stainless Steel Material, Forged Steel A105, Alloy 20# NPT or Sw End Gate Valves 1/2" 800lb 1500lb, Carbon Steel Flanged End Fabricated Y Basket Strainer Bw End 150lb 300lb 600lb and so on.