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1.Galvanized steel coil, immersing the thin steel plate in the molten zinc bath, and adhering a layer of zinc thin steel plate on the surface. It is mainly produced by the continuous galvanizing process, that is, the coiled steel plate is continuously immersed in the zinc-melted plating tank to make galvanized steel plate; alloyed galvanized steel plate. This kind of steel plate is also made by the hot-dip method, but it is heated to about 500 °C immediately after exiting the tank to form an alloy film of zinc and iron. This galvanized steel coil has good paint adhesion and weldability.G30 Galvanized steel coil Galvanized steel is well suited for applications that need rust-resistant materials at a competitive price, ultraviolet light protection and easy integration with other materials. Industries that use hot-dipped galvanized steel products include:

* Automotive
* Pipe and Tubular
* Outdoor Recreation
* Agriculture
* Construction

2.Hot-dip galvanizing is the reaction of molten metal with an iron substrate to produce on alloy layer, thereby combining the substrate and the plating layer.Hot-dip galvanizing is to pickle   iron and steel parts first.In order to remove iron oxide on the surface of iron and steel parts,after pickling, it is cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed solution of ammonium chloride and zinc chloride .And then sent to the hot-dip plating bath.Hot-dip galvanizing has the advantages of uniform coating,strong adhesion and long service life.

3.Galvanized steel is to prevent the steel plate surface from corrosion to extend its service life, in the steel plate 

   surface coated with a layer of metal zinc. 

4.Due to the zinc in the dry air is not easy to change and in the humid environment more can produce a kind of

   alkaline zinc carbonate thin film, the film can protect the internal 

   components and not damaged by corrosion.

Galvanized steel sheet products are mainly used in ：

1) construction,automotive ,metallurgical and electrical industries

2)In the construction industry,mainly used for making roofs and walls,prefabricated keel,pre-cast bulkhead,doors and windows.

3)In automotive industry ,mainly for body shell, chassis ,doors,fuel tanks, etc

4)In metallurgical industry,mainly used as substrate of PPGI. In electrical in industry,mainly for shell of electrical appliance.