1. Hot-dip galvanized steel pipe structure: Hot-dip galvanized pipe is to make molten metal react with iron matrix to produce alloy layer, so that the matrix and coating are combined. The hot-dip galvanized pipe supplied by Tianjin Feilong Pipe Manufacturing Co., Ltd. is to pickle the steel pipe first, in order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the hot-dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel pipe matrix undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.
2. Galvanized strip pipe structure: The galvanized strip pipe has adjusted the production process of hot-dip galvanized pipe. First, the strip steel used for pipe making is pickled to remove the iron oxide on the surface of the strip steel. Then it is air-dried and made into a pipe. It has a uniform and bright coating, with very little galvanizing, and is cheaper than hot-dip galvanized pipes. Its corrosion resistance is slightly worse than that of hot-dip galvanized pipes!
3. Differences

Hot-dip galvanized pipe: (1) Weight: 6.5 kg for 6 meters long; (2) Strong corrosion resistance, long service life, and slightly higher price;
Galvanized strip pipe: (1) Weight: 5.5 kg for 6 meters long; (2) Strong corrosion resistance, slightly worse service life, shorter service life than hot-dip galvanized steel pipe, and low price.