ASTM A653 Galvanized Steel Coil

Name: ASTM A653 Galvanized Steel Coil | G30-G90 Zinc Coated
Availability: InStock

Place of Origin：Shandong,China

Delivery Time： 20 days

upply Ability: 5000 Tons per Month

colour: We can customize the color based on your sample and the RAL color chart

MOQ: 18 Tons

Different minimum order quantities result in different product prices

If you need it, please contact our customer service as soon as possible

ASTM A653 Galvanized Steel:

The Benchmark for High-Performance Zinc ProtectionOur ASTM A653 Hot-Dip Galvanized Steel Coils are manufactured to provide superior atmospheric corrosion resistance and structural reliability. As a versatile material compliant with strict ASTM international standards, these coils are the foundation for critical infrastructure, HVAC systems, and heavy-duty industrial components.
By utilizing a precision continuous galvanizing process, Bomis Steel ensures a metallurgically bonded zinc coating that remains intact even under severe mechanical stress.
Zinc Coating Designations: From G30 to G90
We offer a comprehensive range of zinc coating weights tailored to your project’s specific lifespan requirements. The ASTM A653 standard defines these designations based on the total weight of zinc on both surfaces:G30 ($90g/m^2$): Ideal for indoor applications or light-duty components where cost-efficiency is a priority.G60 ($180g/m^2$): The industry standard for standard outdoor exposure, providing a robust balance of protection and formability.G90 ($275g/m^2$): Engineered for high-corrosive environments. The thicker zinc layer provides maximum sacrificial protection, significantly extending the service life of steel in coastal or industrial zones.

Zinc Coating Designations: From G30 to G90

We offer a comprehensive range of zinc coating weights tailored to your project’s specific lifespan requirements. The ASTM A653 standard defines these designations based on the total weight of zinc on both surfaces: S350GD+Z

G30 ( $90g/m^2$ ): Ideal for indoor applications or light-duty components where cost-efficiency is a priority.
G60 ( $180g/m^2$ ): The industry standard for standard outdoor exposure, providing a robust balance of protection and formability.
G90 ( $275g/m^2$ ): Engineered for high-corrosive environments. The thicker zinc layer provides maximum sacrificial protection, significantly extending the service life of steel in coastal or industrial zones.

Technical Specifications (ASTM A653 Compliance)

Feature	ASTM A653 / A653M Requirement	Bomis Steel Performance
Substrate Grade	CS, FS, SS, DDS, EDDS	Full range available
Zinc Coating Mass	G30, G40, G60, G90 (up to G235)	High precision coating control
Surface Finish	Regular, Minimized, or Extra-smooth	Optimized for end-use
Chemical Treatment	Passivated (C), Oiled (O), Dry (D)	Anti-rust protection guaranteed
Flatness	Standard or Tension Leveled	Superior surface flatness

Product Name	Galvanized Coil
Main Application	Architecture, Industry
Width	600-1500mm
Zinc coating	30-275g/m2
Delivery time	20 day
Payment term	30%deposit,70% against copy of B/L
Coil Weight	3-5mt, Or As Per Customers′ Requests

Factory services

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Frequently Asked Questions

1. What are the common coating designations for ASTM A653 galvanized coil?

ASTM A653 coils typically range from G30 to G90 coating weights. G60 (180g/m²) and G90 (275g/m²) are the most popular for construction due to their superior corrosion resistance and zinc adherence.

2.Can ASTM A653 steel be painted?

Yes, especially if ordered as “chemically treated” or “phosphatized,” which prepares the surface for excellent paint adhesion, commonly used in appliance manufacturing.

3.Are you a manufacturer or a trading company?

We are a factory with over 10 years of sales experience

4.How do you guarantee the quality?

1) Sourcing only from top-tier, certified mills.

2) Conducting our own rigorous in-house QC checks.

3) Providing a formal Mill Test Certificate and our quality warranty for every shipment.