Z275 g/m² 0.20 mm 20 mm Galvanized Steel Strip Smooth Spangle-free

Oct 10, 2025 Leave a message

Galvanized Steel Strip

 

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Galvanizing, or galvanization, is a manufacturing process where a coating of zinc is applied to steel or iron to offer protection and prevent rusting. There are several galvanizing processes available, but the most commonly offered and used method is called hot-dip galvanizing.

Galvanized steel is among the most popular steel types because of its extended durability, having the strength and formability of steel plus the corrosion protection of the zinc-iron coating. The zinc protects the base metal by acting as a barrier to corrosive elements, and the sacrificial nature of the coating results in a long-lasting and high-quality steel product.
 

This versatility makes it applicable to a variety of projects and industries, including agriculture, solar, automotive,construction, and so on. 


The steps in the galvanizing process are as follows:
* The steel is cleaned in a degreasing solution
* After being cleaned, the steel is pickled by being lowered into a vat of diluted hot sulfuric acid
* The steel is then fluxed in an aqueous solution (typically zinc-ammonium chloride)
* After the flux, the steel is galvanized through immersion in a vat of molten zinc
* Afterward, the steel is inspected for consistency and a complete coating

 

Dx52D Dx53D Zinc Coating ASTM A653 G90 Z275 Galvanized Steel Strip

What are the advantages of galvanized steel?

 

  • Low initial cost compared to most treated steels. In addition, galvanized steel is immediately ready to use when delivered. It does not require additional preparation of the surface, inspections, painting/coatings, etc. sparing companies more costs on their end.
  • Longer life. With galvanization, a piece of industrial steel is expected to last more than 50 years in average environments, and can last over 20 years with severe water exposure. There is no maintenance required. The increased durability of the steel's finished product also increases the product's reliability.
  • The sacrificial anode ensures that any damaged steel is protected by the surrounding zinc coating. It doesn't matter if the steel section is completely exposed; the zinc will still corrode first. The coating will corrode preferentially to the steel, creating a sacrificial protection to the areas that are damaged.
  • Rust resistance from the zinc coating. The iron elements in steel are incredibly prone to rusting, but the addition of zinc acts as a protective buffer between the steel and any moisture or oxygen. Galvanized steel is very protective, including sharp corners and recesses that couldn't be protected with other coatings, making it resistant to damage.

 

Dx52D Dx53D Zinc Coating ASTM A653 G90 Z275 Galvanized Steel Strip

Grade DX51D+Z, DX52D+Z, DX53D+Z, DX54D+Z, DX56D+Z, DX57D+Z, DC51D+Z, SGCC, SGCD, S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z, S550GD+Z
Width 20-600mm
Thickness 0.12-4mm(Blow the plating)
>3mm(Rack plating)
Zinc coating 30-275/m2
Surface treatment chromed / oiled/slightly oiled/ dry
Hardness soft, full hard, half hard
Spangle zero spangle / minimized spangle / regular spangle/ big spangle
ID coil 508mm or 610mm
Coil weight 2-8 MT per coil. According to the customer's requirements
Package: Standard export package (Plastic film in the first layer,second layer is Kraft paper. Third layer is galvanized sheet)
Application: Industrial panels, roofing and siding for painting

 

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