Hot-dip galvanizing and its alloys are one of the most common, effective and economical processes for resisting atmospheric corrosion for steel materials.
Hot-dip galvanized steel sheets have ideal comprehensive properties such as corrosion resistance, forming, and painting, as well as low cost and good appearance. They are mainly used in the construction, automobile, and home appliance industries.
The electrochemical potential of the hot-dip galvanized layer is more negative than that of steel materials, and the coating has excellent electrochemical protection properties. The coating is thick and dense, has strong bonding force with the steel matrix, and has good durability. The service life of hot-dip galvanized steel with a galvanizing amount of 600g/m2 can reach more than 30 years. The hot-dip galvanized layer of steel does not require maintenance during use. The hot-dip galvanizing process is simple and has strong adaptability to the shape and size of steel. In addition to steel plates and strips, the hot-dip galvanizing process is also widely used in steel pipes, steel wires and structural parts, and has high productivity. The galvanized layer is economically very competitive compared with other protective coatings, especially for parts that are used for a long time. The cost of the hot-dip galvanized layer is much lower than that of the paint coating.
Uses of hot-dip galvanized steel sheets:
The most important application fields of hot-dip galvanized steel sheets abroad are construction, automobiles, and electrical appliances. They account for most of the consumption of hot-dip galvanized steel sheets. However, the domestic situation is somewhat different. In addition to the construction and automobile industries, light industry is also a major user. , and agriculture, animal husbandry, fishery, and commerce also require larger amounts.
Common brands include DX51D+Z, DX52D+Z, DC51D+Z, DC52D+Z, S350GD+Z, etc. The grade of galvanized steel plate or steel strip is composed of five parts: product application code, steel grade code, steel type characteristics, hot-dip galvanizing code (D) +, and coating general category code.
