Spangle 4X8 Hot Dipped Galvanised Flat Plate SPCC ZN80 275G Gi Plain Sheet Gauge 24

SPCC ZN80-275G GI Hot Dipped DX51D Spangle 4X8 Galvanized Steel Plate

Galvanized steel plate is to prevent the surface of the steel plate from being corroded and prolong its service life. The surface of the steel plate is coated with a layer of metal zinc, which is called galvanized steel plate.

Galvanized Steel Sheet,The main method of galvanizing the surface of the steel plate is hot-dip galvanizing.

The production process of hot-dip galvanized sheet mainly includes: original plate preparation → pre-plating treatment → hot-dip plating → post-plating treatment → finished product inspection, etc. According to the custom, the hot-dip galvanizing process is divided into two categories: off-line annealing and in-line annealing according to different pre-plating treatment methods.

According to production and processing methods, it can be divided into the following categories:

Hot dip galvanized steel sheet. The sheet steel is immersed in a molten zinc bath, and a sheet of zinc is adhered to its surface. At present, it is mainly produced by continuous galvanizing process, that is, galvanized steel plate is made by continuously immersing rolled steel plates in a plating tank where zinc is melted;

Alloyed galvanized steel sheet. This kind of steel plate is also made by hot dip method, but immediately after it is out of the tank, it is heated to about 500 ℃ to form an alloy film of zinc and iron. This galvanized sheet has good paint adhesion and weldability;

Electro-galvanized steel sheet. The galvanized steel sheet produced by the electroplating method has good workability. However, the coating is thin, and the corrosion resistance is not as good as that of the hot-dip galvanized sheet;

Single-sided and double-sided differential galvanized steel. Single-sided galvanized steel sheet, that is, a product that is galvanized on only one side. In welding, painting, anti-rust treatment, processing, etc., it has better adaptability than double-sided galvanized sheet. In order to overcome the disadvantage of not being coated with zinc on one side, there is another galvanized sheet coated with a thin layer of zinc on the other side, that is, double-sided differential galvanized sheet;

Alloy and composite galvanized steel sheet. It is made of zinc and other metals such as aluminum, lead, zinc, etc. to make alloys or even composite plated steel plates. This kind of steel plate has both excellent anti-rust performance and good coating performance;