GI Sheet
Marine grade galvanized steel is a galvanized steel with good corrosion resistance in high salt and humid marine environments, the thickness of the zinc layer determines the corrosion resistance of the steel, generally used in coastal areas of galvanized steel with a zinc layer thickness of 80 microns to 125 microns or even thicker, the service life of the steel in the 8–30 years.
The zinc layer determines the service life of the galvanized steel, so choosing the right zinc thickness for each application will maximize the performance of the steel and reduce project costs. We recommend a zinc coating of around 65 microns for general outdoor construction, 80 microns for coastal areas, and 125 microns for special offshore projects.
| Use | Recommended |
|---|---|
| Indoor uses | Z10 or Z12 (100 g/㎡or 120 g/㎡) |
| Suburban area | Z20 and painted (200 g/㎡) |
| Urban or industrial area | Z27 (270 g/㎡) or G90 (American Standard) and painted |
| Coastal area | Thicker than Z27 (270 g/㎡) or G90 (American Standard) and painted |
| Stamping or deep drawing applications | Thinner than Z27 (270 g/㎡) or G90 (American Standard) to avoid coating peeling off after stamping |
Galvanized steel used in marine environments must have good physical properties, safety, and economy. During use, it is necessary to ensure the stability of the structure and reduce the cost of long-term maintenance.
Excellent corrosion resistance
Good strength and toughness
Good water permeability
Anti-oxidation
Ship
Dock
Offshore platform
Galvanized steel used in coastal construction, shipbuilding, marine engineering, and other fields requires different zinc thicknesses to resist salt spray and humidity and various mechanical properties. Wanzhi Group produces galvanized steel coils, sheets, and structural steel products in the range of 30-350g, and we can customize the material specifications and zinc thicknesses according to the environment of use.
Galvanized steel DX51D Z140-DX51D Z275 is the most common material specification chosen by our customers for outdoor construction and coastal areas. Wanzhi Group has customized solutions for many structural steel manufacturers and roofing sheet fabricators.
Production: Production – Quality Control (5-45 days.)
Transportation: Packaging – Transportation (Export Packaging: Plastic film, Moisture-proof paper, galvanized iron, etc…)
After-sales: 24 hours online
Marine-grade metals can withstand salt water and humid environments, withstand various stresses in the marine environment, and have good stability and weldability. In addition to galvanized steel, several other common marine-grade metals are used for performance, cost, and application.
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