Galvanized pipe in the process of our decoration is still more commonly used, also called galvanized steel pipe, hot galvanized and galvanized two kinds, hot galvanized zinc coating thick, with uniform coating, strong adhesion, long service life and other advantages. Galvanized pipes are widely used. Today, Ji'nan galvanized pipe manufacturers will introduce the classification of galvanized pipes for you.
e 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. 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. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.
2. Cold galvanized pipe. Cold galvanizing is galvanized and zinc is very small. Only 10-50g/m2, its corrosion resistance is much different from that of hot dip galvanized steel. Regular galvanized pipe manufacturers, in order to ensure quality, most do not use galvanized.
3. Hot-dip galvanized steel pipe. Complex physical and chemical reactions occur between the matrix of galvanized steel pipe and molten bath in Ji'nan, 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.
4. Cold galvanized steel pipe. The zinc layer is an electroplating layer, and the zinc layer is separately separated from the steel tube substrate. The zinc layer is thin, and the zinc layer is simply attached to the steel tube substrate, so it is easy to fall off. Therefore, its corrosion resistance is poor. In new buildings, cold galvanized steel pipes are not allowed to be used as water pipes.
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