Galvanized pipe, also known as galvanized steel pipe, is divided into two types, hot galvanizing and galvanizing. Hot dip galvanized zinc coating is thick, which has the advantages of uniform coating, strong adhesion and long service life. The cost of galvanizing is low, the surface is not very smooth, and its corrosion resistance is much worse than that of the hot galvanized pipe.
Galvanized steel pipe corrosion resistance, and gas containing sulfur dioxide and other corrosive gases. The Ji'nan galvanized pipe is to make the molten metal react with the iron matrix to produce the alloy layer, so that the matrix and the two layers of the coating are combined. Hot dip galvanizing is to pickle steel pipes first, then remove iron oxides on the surface of steel pipes, then pickle them, then clean them through ammonium chloride or zinc chloride water solution or ammonium chloride and zinc chloride mixed water solution tank, then send them into hot dip bath.
The hot-dip galvanizing of Ji'nan galvanized pipe has the advantages of uniform coating, strong adhesion, long service life and so on. The complex physical and chemical reaction of the hot dipped galvanized steel tube matrix and the molten bath formed a corrosion resistant and tightly structured zinc - iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel tube matrix. Therefore, its corrosion resistance is strong.
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