Machinery Precision Parts, Welding Parts, CNC Machining Parts manufacturer / supplier in China, offering 304/316 Stainless Steel Welding Flange Square Pipe Fittings for Industrial Liquid Transportation, Corrosion Resistant Metal Customization Welding Flanges Connection Vacuum Hydraulic Pipeline, High Flow Water Oil Petroleum Transportation Pipeline Weld Flanges Vacuum Pipe Connection and so on.