The galvanized seamless steel pipe has a small galvanized layer of only 10-50g/m2. The corrosion resistance of the galvanized pipe is poor and the galvanized pipe is hot-dipped. Common galvanized pipe manufacturers use cold galvanized pipes as quasi-cold water and gas pipes. Galvanized steel cold galvanized layer, layered zinc layer and steel matrix. A thin layer of zinc is simply attached to the steel substrate. Therefore, its corrosion resistance is poor. Galvanized steel is forbidden to be used as cold water supply in new houses.


Galvanized seamless steel pipe usually has two ways, one is hot dip galvanizing. Second, galvanizing. Zinc plating includes wet, dry, lead, zinc and redox processes. By definition, galvanizing is an electrolytic method, which refers to the uniform, compact and good combination of metals on the surface of parts. The galvanized layer is very smooth, compact, with good mechanical properties and excellent corrosion resistance. The main difference between different galvanizing methods is pickling of steel, which method can improve the quality of galvanizing. In practical production, hot-dip galvanizing is generally due to the complexity of galvanizing process. For some special requirements, galvanizing is used.