Specification:
| Grade | SGCC, CGCC, SPCC, SPHC, DX51D, DX52D, DX53D etc |
| Width | 1000mm, 1219mm, 1500mm or customized |
| Thickness | 0.12mm-6.0mm |
| Zinc coating | Z20g/m2 - 275g/m2 |
| Standard | ASTM JIS GB/T EN |
| Length | 2000mm, 2438mm, 6069mm or customized |
Galvanized Steel Sheet/Plate is a steel sheet that has a layer of zinc applied to the surface of the steel sheet by electroplating or hot-dip process. The main function of this layer of zinc is to provide additional anti-corrosion protection, because zinc has good corrosion resistance and can effectively prevent steel from rusting due to exposure to air, water and other environmental factors.
Production process
Hot-dip galvanizing:
The steel sheet is immersed in molten zinc liquid to form a zinc coating. This method is usually used for thick steel sheets, and the zinc coating is thicker and has stronger corrosion resistance.
Electro-galvanizing:
Zinc is deposited on the surface of the steel sheet by electrolysis. This method produces a thinner zinc layer with a smoother surface, which is suitable for applications with high requirements for appearance.
Features and advantages
Corrosion resistance:
Galvanized steel sheet has excellent anti-oxidation properties, which can prevent rust and corrosion and is suitable for various harsh climatic conditions.
Wear resistance:
The zinc layer provides additional wear protection for the steel sheet and extends its service life.
Aesthetics:
The surface of galvanized steel sheet is smooth and has a bright silver luster. It is often used in occasions with high decorative requirements.
Formability:
Compared with ordinary steel, galvanized steel sheet still has good formability and can be processed in various ways (such as bending, stamping, etc.).
Environmentally friendly:
Zinc has a sacrificial anode effect on the surface of the steel sheet. The zinc is corroded first instead of the steel sheet, which further protects the base metal.
Application areas
Construction industry:
Widely used in building structures such as roofs, walls, drainage systems and curtain walls because of its good corrosion resistance and ability to withstand adverse weather conditions.
Automotive industry:
Used for body parts, especially in the anti-corrosion protection of automobile chassis and body.
Home appliances:
Such as the outer shell and internal components of home appliances such as refrigerators and washing machines.
Infrastructure:
Protection of external facilities such as power towers, bridges, communication equipment, pipelines, etc.
Containers and packaging:
Including trash cans, storage boxes, agricultural tools, etc., with a longer service life.
Advantages and disadvantages
Advantages:
Good corrosion resistance, especially in humid or marine environments.
Low maintenance cost, suitable for long-term use.
The manufacturing cost is relatively low, economical and practical.
Disadvantages:
Limited performance in thermal stress and extreme environments, for example, the zinc layer may degrade under extremely high temperatures.
The zinc layer may peel off due to long-term use or mechanical damage, affecting the anti-corrosion effect.
Not suitable for all types of welding, and sometimes special welding methods are required.
Overall, galvanized steel sheets have been widely used in many industries due to their excellent corrosion resistance and durability, especially for those exposed to harsh environments.
