| Message: | Products DescriptionNow the hot dipped galvanized steel sheet is mainly hot dipped cold roll galvanized.Hot dipped galvanized steel sheet is developed from the older hot-dip galvanized method. Since 1836 France applied hot galvanized to industry, it has been one hundred and forty years old. However, the hot dip galvanized industry has developed rapidly over the past thirty years with the rapid development of cold rolled strip.The production process of hot dipped galvanized steel sheet mainly includes: preparation of original board, pretreatment before plating, hot dipped coating, plating after treatment, finished product inspection, etc. According to the habit, it is often based on
the pre plating process.Quality CharacteristicsHot dipped galvanized steel sheet has many quality characteristics.1. Smooth appearance, no zinc tumor, burr, silver white.2. The thickness is controllable and can be selected within 5-107 m.3. No hydrogen embrittlement and no temperature hazards. It can ensure that the mechanical properties of materials remain unchanged.4. It can replace the part of hot dipped galvanizing process.5. Good corrosion resistance, neutral salt spray test for 240 hours.Zinc is soluble in acid and soluble in alkali, so it is called amphoteric metal. Zinc does not change almost in the dry air. In moist air, zinc carbonate is formed on the surface
of zinc. In the atmosphere containing sulfur dioxide, hydrogen sulfide and marine atmosphere, the corrosion resistance of zinc is poor, especially in the atmosphere of high temperature and high humidity containing organic
acid, and the zinc coating is easily corroded.Zinc coating is passivated, dyed or coated with light retaining agent, which can significantly
improve its protective and decorative properties. In recent years, with the development of galvanization technology, the usage of high performance zinc plating brighteners has been put into protective decorative applications from simple protective purposes.Package & Lo......url:http://www.galvanized-steel.com |
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