China API 3′′ Forged Steel Socket Welding Wcb Gate Valve Class 150-800lb Electric Ball Valve Swing Check Valve Globe Valve Butterfly Valve Price, Find details about China Gate Valve, Sluice Valve from API 3′′ Forged Steel Socket Welding Wcb Gate Valve Class 150-800lb Electric Ball Valve Swing Check Valve Globe Valve Butterfly Valve Price