ASTM A653 galvanized steel is a standardized specification for steel sheet, coil, and strip coated with zinc through a hot-dip process. This American standard GI coil is engineered for superior corrosion resistance, making it a fundamental material for demanding construction and manufacturing applications worldwide. Produced by leading mills and supplied globally by experts like ChinaCNU Steel, this material offers a reliable combination of strength, durability, and protective coating. This page details the specifications, uses, and advantages of sourcing high-quality ASTM galvanized coil for your project.
Our ASTM A653 galvanized steel is available in a comprehensive range of grades and coatings to meet diverse project requirements. The table below outlines the key specifications we regularly supply from our Qingdao factory stock and mill partners.
| Grade | Thickness (mm) | Width (mm) | Zinc Coating (oz/ft²) | Standard |
|---|---|---|---|---|
| CS Type A, B, C | 0.15 – 3.0 | 600 – 1500 | G30 to G235 | ASTM A653 |
| DS Type A, B | 0.40 – 2.0 | 900 – 1250 | G60, G90 | ASTM A653 |
| DDS Type A, B | 0.45 – 1.5 | 1000 – 1250 | G90, G115 | ASTM A653 |
| Structural (SS) Grades | 1.0 – 6.0 | Up to 2000 | G60, G90, G165 | ASTM A653 |
Note: G90 galvanized coating is a popular choice for enhanced durability. Other coating designations, surface finishes (regular spangle, minimized spangle, smooth), and tensile strengths are available upon request.
ASTM A653 galvanized steel is versatile and used across numerous industries due to its protective zinc layer. Key applications include:
When you source ASTM galvanized coil, partnering with a reliable supplier is critical. Here’s why global buyers trust ChinaCNU Steel:
The price for ASTM A653 galvanized steel fluctuates based on global raw material costs, zinc premiums, and specific order parameters like grade, coating weight (such as G90 galvanized), dimensions, and quantity. We provide FOB Qingdao pricing, which gives you clarity on the factory cost and allows you to manage your own shipping and logistics. For the most accurate and competitive quote tailored to your project’s exact specifications, please contact our sales team. We offer free quotes with a fast turnaround.
The “G” number refers to the total minimum coating weight in ounces per square foot on both sides of the sheet. G90 galvanized coating (0.90 oz/ft² total) is approximately 50% thicker than G60 (0.60 oz/ft² total). This makes G90 galvanized steel significantly more resistant to corrosion and is the preferred choice for outdoor applications, structural components, and harsh environments where long-term durability is essential.
Yes, absolutely. While standard galvanized steel has a visible spangle pattern, we can supply ASTM galvanized coil with a smooth, minimized spangle, or extra-smooth finish. This is often required for subsequent painting (pre-painted galvanized steel) or for applications where a uniform, non-reflective surface is critical, such as in certain appliance or automotive parts.
Our standard production and preparation lead time is 15-25 days after order confirmation and receipt of payment. Shipping time from Qingdao Port to major ports in the Middle East or Africa typically adds an additional 20-35 days depending on the destination. We handle all documentation and provide full support to ensure your American standard GI coil arrives smoothly.
Yes, we provide full Mill Test Certificates (MTCs) or Material Test Reports with every shipment. These documents certify that the ASTM A653 galvanized steel meets all the chemical composition, mechanical properties, and coating weight requirements specified in the ASTM A653 standard. This traceability is crucial for quality assurance in construction and manufacturing projects.
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