1. Hot-dip galvanized steel pipe structure:
The hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. The steel pipe is pickled first. In order to remove the iron oxide on the surface of the steel pipe, after the 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 middle. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The matrix of the hot-dip galvanized steel pipe undergoes a complex physical and chemical reaction with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, its corrosion resistance is strong.
2. Galvanized pipe structure:
Galvanized pipes adjusted the production process of producing hot-dip galvanized pipes. The strip steel used for pipe making is first pickled. In order to remove the iron oxide on the surface of the strip steel, after pickling, it is cleaned in a tank with ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then Sent into the hot dip plating tank. It is then air-dried and then made into a tube. The coating layer is uniform and bright, and the amount of zinc coating is small, which is lower than the cost of producing hot-dip galvanized pipes. Its corrosion resistance is slightly worse than that of hot-dip galvanized pipes!
3. The difference between hot-dip galvanized steel pipe and galvanized steel pipe:
Hot-dip galvanized pipe:
1) The color of the hot-dip galvanized pipe is a bit whitish, and the weight: 6 meters long and 6.5 kg (strong corrosion resistance, long service life, slightly higher price);
2) The hot-dip galvanized pipe is snow white but not shiny or reflective, with a lot of snowflakes on the surface, and zinc tumors (condensed zinc) on both ends
Galvanized pipe:
1) The color of the galvanized steel pipe is a little blue, 2) Weight: 6 meters long and 5.5 kilograms (strong corrosion resistance, slightly worse than the service life of hot-dip galvanized steel pipe, the service life is shorter, the price is low and economical).
2) The galvanized tube is shiny white and reflective, with very few snowflakes, and the two ports are clean and free of zinc tumors.
