Steel Pipe, Steel Tube, Welded Steel Pipe manufacturer / supplier in China, offering Galvanized Square Steel Pipe, Gi Rhs, Made in China, ERW Square Steel Pipe, Gi Square Tube, Q195-Q235 Black Square Tube for Building Oiled and so on.
Youfa group has 16 round pipe galvanize process line. This video show one of them. Gi pipe is our strongest item. Smooth and bright surface.