Steel Pipe and Fitting, Valve, Manhole Cover manufacturer / supplier in China, offering 50mm Ductile Cast Iron Ggg50 Manual Slide DIN 3355 F5 Metal Seated Gate Valve Pn16, ASTM A234 24 Inch Sch40 Carbon Steel Welded Double Flanged Pipe, Wholesale 4 Inch SS304 Stainless Steel High Lift Borehole Deep-Well Water Pump for Farm Agriculture Irrigation and so on.