Hot-dipped galvanized steel pipe structure: Hot-dipped galvanized steel pipe is to make molten metal react with iron matrix to produce alloy layer, so that the matrix and coating are combined. Pipe is first pickled, in order to remove iron oxide from the surface of the pipe, after pickling, the pipe is cleaned through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent into the hot dip galvanizing bath. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between the hot-dip galvanized steel tube matrix and the molten plating solution, resulting in a zinc-iron alloy layer with a close corrosion resistance structure. The alloy layer is integrated with pure zinc layer and steel tube matrix. Therefore, it has strong corrosion resistance.
2. Structure of galvanized strip pipe: Galvanized strip pipe adjusts the production process of hot-dip galvanized pipe. In order to remove the iron oxide on the surface of strip steel, the strip steel was first pickled. After pickling, the strip steel was cleaned by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent to hot dipping bath. Then air-dried and made into pipes. It has uniform and bright coating, little zinc plating, and lower cost than hot-dip galvanized pipe. Its corrosion resistance is slightly worse than that of hot-dip galvanized tubes.
3. The difference between hot-dip galvanized steel pipe and galvanized strip pipe: hot-dip galvanized steel pipe:
1) The color hot-dip galvanized pipe is a little white, weight: 6 meters long, 6.5 kg (strong corrosion resistance, long service life, slightly higher price);
2) Hot-dip galvanized pipes are snow-white but not shiny or reflective, with many snowflakes on the surface and zinc nodules (condensed zinc) on both ends.
Galvanized strip pipe:
1) The color galvanized strip pipe is a little blue, 2) Weight: 6 meters
long with 5.5 kg (corrosion resistance is strong, slightly worse than hot
galvanized steel pipe service life is short, low price economy).
2) The galvanized strip tube is white and reflective, rarely snowflake-like, and the two ports are clean and free of zinc tumors.
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