GI Steel Pipe manufacturers
Size: Different Galvanized Steel Pipe 1. Pre-galvanized: Pre galvanized steel pipe is made of hot dipped galvanized steel strip directly. Zinc coating:40-60g/sm , If need more zinc coating , we can make processing as the order. (Thickness is 0. 7mm-4. 5mm ) 2. Hot dipped galvanized: Hot dipped...