Color analysis of galvanized seamless steel tube
Galvanized seamless steel pipes have very little galvanizing, only 10-50g/m2, and their corrosion resistance is much worse than that of hot-dip galvanized pipes. Regular galvanized pipe manufacturers use quenched galvanized pipes as water and gas pipes. The galvanized layer of the cold-galvanized steel pipe is an electroplated layer, and the zinc layer and the steel pipe base are separately layered. The zinc layer is thin, and the zinc layer is simply attached to the steel pipe base and is easy to fall off. Therefore, its corrosion resistance is poor. In newly built houses, the use of cold-galvanized steel pipes as feedwater pipes is prohibited. Anyone who has been in contact with galvanized seamless steel pipes for a long time will analyze the appearance of galvanized seamless steel tubes from the appearance of galvanized seamless steel tubes. Made a detailed summary: The galvanized seamless steel tube galvanized layer is passivated by chromate to improve corrosion resis...