Galvanized steel appearance

(1) Surface state: Due to the different treatment methods in the coating and plating process, the surface state of galvanized sheets is also different, such as ordinary spangle, fine spangle, flat spangle, non-spangle and phosphating surface.

Depending on application requirements, there are also galvanized checkered plates. Among them, the checkered plate mainly includes large zinc pattern, small zinc pattern and other checkered plates. Mild steel grating is the ideal non-slip material for floors requiring extensive coverage. The checkered diamond plate is made from a single piece of material topped with a serrated edge that provides non-slip grip from all directions. Checker boards are used as floor or wall panels. Steel faces with raised check patterns will prevent damage to floors or surfaces due to cargo movement, such as pallet trucks and truck/van interiors in warehouse environments, ship floors, decks, oilfield rig treads, stair treads. The embossing thickness is suitable for embossing of various steel plates, cold/hot plates, and galvanized plates from 0.2 to 3.0 mm.

(2) The galvanized sheet shall have a good appearance and shall not have defects harmful to the use of the product, such as no plating, holes, cracks and scum, excess plating thickness, scratches, chromic acid dirt, white rust, etc.

Galvanized steel sheets can be divided into the following categories according to production and processing methods:

①Hot-dip galvanized steel sheet. Dip the thin steel plate into the molten zinc tank to make the thin steel plate with a layer of zinc adhered to its surface. At present, the continuous galvanizing process is mainly used for production, that is, the coiled steel plate is continuously immersed in a galvanizing tank with molten zinc to make a galvanized steel plate;

②Alloyed galvanized steel plate. This kind of steel panel is also made by hot dip method, but it is heated to about 500℃ immediately after coming out of the tank, so that it can form an alloy film of zinc and iron. This galvanized sheet has good paint adhesion and weldability;

③Electro-galvanized steel plate. The galvanized steel panel manufactured by electroplating has good processability. However, the coating is thinner and its corrosion resistance is not as good as that of hot-dip galvanized panels;