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ASTM A653 G90 galvanized steel refers to the ASTM A653 specification. The zinc coating code G90 indicates that the total zinc coating density on both sides is 0.9 oz/ft² (average minimum value of three points on both sides) or 0.8 oz/ft² (minimum single point value on both sides).

ASTM refers to the American Society for Testing and Materials.

A-653 is one of its sub-standard numbers.

ASTM A653 is the standard specification for hot-dip galvanized iron alloys or galvanized steel sheets.

The core advantage of G90 coating: excellent corrosion resistance

The anti-corrosion ability of galvanized steel directly depends on the thickness and quality of the zinc layer.

Sacrificial protection: Even if the surface of the coating is scratched, zinc will preferentially oxidize over iron, thus protecting the internal steel substrate from rusting.

Long lifespan: G90 coating can provide decades of effective protection in most atmospheric environments (non extreme industrial or marine environments), significantly reducing maintenance and replacement costs.

Economic balance: Compared to thicker coatings (such as G115), G90 provides sufficient protection while being more cost-effective; Compared to thinner coatings such as G60, its protection life is longer.

ASTM A653 G90 galvanized steel has an extremely wide range of applications:

Building and Structures: Roofing, wall systems, trusses, purlins, lightweight steel frame housing.

HVAC and Ventilation Ducts: Durable air conditioning ducts and exhaust systems.

Appliance Housings: Washing machine, dryer, water heater housings, etc., providing rust protection.

Electrical Cabinets and Enclosures: Distribution boxes, switch cabinets, etc., ensuring stability in various environments.

Agricultural and Industrial Equipment: Grain silos, agricultural machinery parts, warehouse shelving, workbenches.

Automotive Interior Structural Components: Some non-exterior structural components.

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