What are the causes of white rust?
Galvanized sheet in the transport of water.
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When the hot galvanized sheet is in the humid air, especially when the air contains SiO2, CO2, NO2 and NO and other acidic substances, the surface of the galvan···
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There are three ways to test the corrosion resistance of hot-galvanized sheet: salt spray test; Wet test; Erosion test.
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Chromate passivation treatment of galvanized sheet can form passivation film, its chemical reaction formula is as follows: Zn+H2GrO4-ZnGrO2=H2The trivalent chro···
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large zinc flower is normal zinc flower, according to the normal production process can produce large zinc flower, its crystal core diameter is not less than 0.···
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