Butterfly Valve, Sanitary Valve, Ball Valve manufacturer / supplier in China, offering Commercial-Grade Alloy St-F2149 Industrial Female Male Threaded Hydraulic Fittings for Process Equipment, Professional-Series Forged St-F2149 High-Performance Female Male Threaded Forged Steel Fittings for Manufacturing, Carbon St-F2149 Professional Stainless Steel Female Male Threaded Fittings for Petroleum Systems and so on.