Galvanized sheet refers to a steel sheet coated with a layer of zinc on the surface. Galvanizing is an economical and effective anti-rust method that is often used. About half of the world’s zinc production is used in this process.
It can be divided into hot-dip galvanized steel panels, alloyed galvanized steel panels, electro-galvanized steel panels, single-sided galvanized steel panels and double-sided differential galvanized steel panels, and alloy composite galvanized steel panels.
In addition to the above five types, there are also colored galvanized steel sheets, printed and painted galvanized steel sheets, PVC laminated galvanized steel sheets, etc. But currently the most commonly used is still hot-dip galvanized sheet.
Generally speaking, the thicker the galvanized sheet, the greater the allowable error, which is not a fixed 0.02-0.04 mm. The thickness deviation also has different requirements according to the yield, tensile coefficient, etc. The length and width deviation is generally 5mm. The thickness of the plate Generally between 0.4-3.2.
The surface conditions of galvanized sheets are also different due to different treatment methods in the coating process, such as ordinary zinc flowers, fine zinc flowers, flat zinc flowers, no zinc flowers, and phosphated surfaces. German standards also specify surface levels.
Standard value of galvanizing amount: Galvanizing amount is a commonly used and effective method to express the thickness of the zinc layer of galvanized sheets. The unit of galvanizing amount is g/m2. The requirements for the chemical composition of galvanized sheet substrates vary from country to country. National standards generally test the content of carbon, manganese, phosphorus, sulfur, and silicon.
The produced galvanized sheet packaging is generally divided into two types: galvanized sheet cut into fixed lengths and galvanized sheet packaging in coils. It is generally packed in iron sheets, lined with moisture-proof paper, and tied to a bracket with an iron waist. The bundling should be secure to prevent the galvanized sheets inside from rubbing against each other.
Galvanized sheet and strip products are mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery and commercial industries. Among them, the construction industry is mainly used to make anti-corrosion industrial and civil building roof panels, roof grilles, etc.; the light industry industry uses it to make home appliance casings, civil chimneys, kitchen utensils, etc.; the automotive industry is mainly used to make corrosion-resistant parts for cars, etc. ; Agriculture, animal husbandry and fishery are mainly used for grain storage and transportation, freezing processing equipment for meat and aquatic products, etc.; commerce is mainly used for storage and transportation of materials, packaging equipment, etc.