Coupling, Valve Parts, Pump Parts manufacturer / supplier in China, offering Factory Price Black Adequate Inventory Plastic 33.7mm 1 Inch Nylon Corrosion Resistance Pipe Clamp Hose Couplings, Great Quality Factory Direct Stainless Steel Medium Pressure 600psi 139.7mm 5 Inch DN125 Pipe Couplings, Wholesale Adequate Invertory Stainless Steel Medium Pressure 600psi 141.3mm DN125 5 Inch Grooved Couplings and so on.