Butterfly Valve, Ball Valve, PVC Flange manufacturer / supplier in China, offering Heat Resistance 160mm Pn16 Rubber Ring Joint Coupling Plumbing PVC Pipe Fitting for Water Supply/Drainage Pipeline System/Small Industrial Pipeline, Corrosion Resistance Pn16 PVC Rubber Ring Joint Coupling Plumbing Pipe Fitting for Water Supply/Wastewater Discharge Pipeline/Outdoor Pipeline Laying, 50-500mm DIN Standard Pn10 PVC Loose Pipe Fitting Valve Flange for Agricultural Irrigation Pipeline/Small Industrial Pipeline/Outdoor Pipeline Laying and so on.