中文    |   English

News

Position:Home >Industry

On the knowledge of galvalume coil steel

  • Time:2024-06-03
Product process: The steel is sent from the billet to hot rolling and rolled into a certain thickness of the plate, such as a thickness of about 10mm. If the user does not have higher requirements on the surface, thickness, and mechanical strength of the plate, the finished product processing, such as plating Zinc and the like are sold directly as hot plates. If there are higher requirements for the plates, the hot-rolled plates are sent to the cold rolling line for reprocessing, pickled, annealed, and rolled again. Cold rolled sheet with thin, smooth surface and better mechanical properties.
Main application: The use of galvanized steel plate in the decoration industry is mainly used for ceiling and curtain wall decoration. The galvanized steel plate ceiling can be used for decoration in factories, offices, shopping malls and other places
Product category specifications: curtain wall galvanized steel plate, buried plate, galvanized embedded plate, galvanized plate, galvanized steel plate, 6 * 100 * 100, 6 * 150 * 150, 8 * 150 * 150, 8 * 200 * 200, 8 * 200 * 250, 8 * 200 * 300, more specifications thickness 6-16mm, length width: 100-300. Galvanization has become an important anticorrosion method for steel, not only because zinc can form a dense protective layer on the surface of steel, but also because zinc has a cathodic protection effect. When the galvanized layer is damaged, it can still prevent iron matrix through cathodic protection Wood corrosion.
Surface state: Due to the different treatment methods in the galvanizing process, the surface state is also different, such as ordinary zinc flower, fine zinc flower, smooth zinc flower, zinc-free flower and phosphating surface. The German standard also specifies surface levels.
The galvanized sheet should have a good appearance, and must not have any defects that are harmful to the use of the product, such as no plating, holes, cracks and scum, over plating thickness, scratches, chromic acid dirt, white rust, etc. Foreign standards are not very clear about the specific appearance defects. Some specific defects should be listed on the contract when ordering.