N/a manufacturer / supplier in China, offering BS1139 Hot DIP Galvanized Pre-Galvanized Steel Pipes Tube for Scaffolding Materials in Oil Petroleum Construction, Hot Dipped Galvanized Scaffolding Pipe for Construction Buildings Gi Pipe, 1/2"-24" (20mm-610mm) ASTM JIS DIN GB Standard Galvanized/ERW/Welded/Seamless/Spiral/Stainless/Casing Steel Pipe for Greenhouse/Scaffolding/Furniture and so on.