Hot-dip galvanized pipe is to make molten metal react with iron substrate to produce alloy layer, so that the substrate and the two coating are combined. The hot dip galvanizing is first to wash the steel tube, in order to remove the iron oxide on the surface of the steel tube. After pickling, it is cleaned by the solution of ammonium chloride or zinc chloride or ammonium chloride and zinc chloride in the mixed solution tank, and then sent into the hot dip bath.
Ji'nan galvanized pipe has the advantages of uniform coating, strong adhesion and long service life. There is complex physical and chemical reaction between the steel tube matrix and the molten bath, forming a corrosion resistant structure of zinc iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel tube substrate. Therefore, its corrosion resistance is strong. The Ji'nan galvanized pipe has the following advantages:
1. The surface of the steel pipe is more durable by using anti embroidering treatment, not faster than oxidation.
Two, the steel pipe is fully protected. After heating, every part of the steel pipe is plated with zinc, and the concave and convex parts are protected.
Three, with anti-corrosion and wear-resistant features, so that the use of steel pipe longer.
Four, since zinc has been plated outside the steel tube, the time for oil painting or paint is omitted, and the construction is more convenient.
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