Material：Q195, Q235, SGCC, DX51D~DX53D,G350~G550
Zinc Coating ：40-275 g/m²
Thickness L0.12~3.0mm
Width:600~1500mm
Surface Treatment :Skin Passed, Chromated, Oiled, Non-treatment
Surface:Regular/Minimized/Zero Spangle
Zinc Adhesion : ≥90%
Tensile Strength : 270-500 MPa
Elongation : ≥20%
Standards : ASTM A653, JIS G3302, EN 10346, etc.
Applications : Construction materials, automotive manufacturing, appliance casing, ventilation ducts, etc.
Packaging : Standard export seaworthy packaging
Overview
Hot Dip Galvanized Steel Sheet is a type of steel sheet that has been coated with a layer of zinc through a hot-dip galvanizing process, providing excellent corrosion resistance and a long service life. This process involves immersing the steel sheet in a bath of molten zinc, which forms a metallurgical bond between the steel and the zinc coating. The result is a durable and versatile material that is widely used in various industries where protection against corrosion is essential.
Advantages
The primary feature of Hot Dip Galvanized Steel Sheet is its outstanding corrosion resistance. The zinc coating acts as a sacrificial layer, protecting the underlying steel from rust and corrosion even when the surface is scratched or damaged. The thickness of the zinc coating can vary, typically ranging from 15 microns to over 85 microns, depending on the specific requirements of the application. This steel sheet also offers good formability, allowing it to be easily bent, folded, and shaped into various configurations without cracking the zinc coating. It has a smooth and uniform surface, which can be further processed, such as painting or powder coating, to enhance its appearance and provide additional protection. Hot Dip Galvanized Steel Sheet has good mechanical properties, including moderate strength and ductility, making it suitable for a wide range of structural and non-structural applications.
Application
In the construction industry, Hot Dip Galvanized Steel Sheet is commonly used for roofing, siding, and gutters, where its corrosion resistance is crucial for withstanding the effects of weather and moisture. It is also used in the fabrication of structural components, such as purlins, girders, and brackets, for buildings and bridges. The automotive industry utilizes this material for manufacturing body panels, chassis components, and exhaust systems, as it helps to prevent rust and extend the lifespan of the vehicle. In the agricultural sector, it is used for producing farm equipment, storage tanks, and livestock fencing, which are exposed to harsh outdoor environments. Additionally, Hot Dip Galvanized Steel Sheet is widely used in the manufacturing of electrical enclosures, signage, and industrial equipment, where protection against corrosion is a key requirement.
FAQ
Q: How long does the zinc coating on Hot Dip Galvanized Steel Sheet last?
A: The lifespan of the coating depends on the environmental conditions, but in moderate atmospheric environments, it can last for 15 to 30 years or more. In more corrosive environments, such as near the coast or in industrial areas, the lifespan may be shorter, but additional coatings can be applied to extend it.
Q: Can Hot Dip Galvanized Steel Sheet be painted?
A: Yes, it can be painted, but proper surface preparation is necessary to ensure good adhesion. This typically involves cleaning the surface to remove any oils, dirt, or zinc oxides and using a primer specifically designed for galvanized steel.
Q: What is the difference between hot dip galvanizing and electro-galvanizing?
A: Hot dip galvanizing involves immersing the steel in molten zinc, resulting in a thicker and more durable coating, while electro-galvanizing uses an electrochemical process to deposit a thinner zinc coating. Hot dip galvanized coatings are generally more suitable for harsh environments.
Q: Can Hot Dip Galvanized Steel Sheet be welded?
A: Yes, it can be welded, but the zinc coating near the weld area may need to be removed before welding to prevent the formation of zinc fumes, which can be harmful, and to ensure good weld quality.
