Compared with the aluminum-zinc alloy, the galvanized layer has relatively active chemical properties, so the anti-corrosion ability is quite different. The test under the same outdoor conditions shows that the service life of the galvanized sheet is more than four times that of the galvanized sheet......

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. Hot-dip galvanizing is to pickle the steel pipe first.