Galvanized sheet material is a steel sheet with a layer of zinc on the surface.
Galvanizing is a commonly used cost-effective method of preventing rust. About half of the world's zinc production is used in this process. This kind of steel plate is also made by hot-dip method, but it is heated to about 500℃ immediately after leaving the storage tank, forming an alloy film of zinc and iron. The galvanized sheet has good coating adhesion and weldability; the galvanized steel sheet made of this electroplating has good processing properties. However, the coating is thinner and its corrosion resistance is not as good as hot-dip galvanized sheet.
Galvanized sheets have different surface states due to different treatment methods during the coating process, such as ordinary zinc spots, fine zinc spots, flat zinc spots, zinc-free spots and phosphated surfaces.German standards also specify surface slope. Galvanized sheets should have good appearance and should not have any defects that are harmful to the use of the product, such as no coating, holes, cracks, scum, excessive coating thickness, scratches, chromic acid dirt, white rust, etc. Foreign standards are less clear about specific appearance defects. When ordering, some specific defects should be listed in the contract.
Galvanized sheet and strip products are mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery, commerce and other industries. Among them, the construction industry is mainly used to manufacture anti-corrosion industrial and civil building roof panels, roof grilles, etc. The light industry uses it to make home appliance casings, civil chimneys, kitchen utensils, etc. The automobile industry is mainly used to manufacture corrosion-resistant parts for automobiles. In agriculture and animal husbandry, it is mainly used for food storage and transportation, meat and aquatic product freezing and processing tools, etc. It is mainly used for material storage and transportation, packaging equipment, etc. in business.
