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.
Product Specifications
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.
Applications
ASTM A653 galvanized steel is versatile and used across numerous industries due to its protective zinc layer. Key applications include:
- Building & Construction: Roofing and wall cladding, structural frames, purlins, trusses, and building panels.
- Automotive Manufacturing: Body panels, chassis components, brackets, and underbody parts requiring corrosion resistance.
- HVAC & Ductwork: Fabrication of air conditioning ducts, ventilation systems, and exhaust pipes.
- Agricultural Equipment: Grain silos, animal housing, machinery guards, and irrigation systems.
- Home Appliances: Washing machine drums, refrigerator cabinets, oven housings, and other internal and external parts.
- Electrical Enclosures: Cabinets, junction boxes, and cable trays that need protection from the elements.
Why Choose ChinaCNU Steel
When you source ASTM galvanized coil, partnering with a reliable supplier is critical. Here’s why global buyers trust ChinaCNU Steel:
- Direct Factory Source: We operate from our base in Qingdao, China, a major steel hub, ensuring competitive pricing and streamlined logistics for your American standard GI coil orders.
- Proven Quality & Certifications: All materials comply with ASTM A653 specifications. Our operations are backed by ISO 9001 certification and independent SGS inspection services are available for verification.
- 15+ Years Export Experience: With over a decade and a half of expertise, we have successfully supplied to 80+ countries across Africa, the Middle East, Southeast Asia, and South America.
- Flexible MOQ & Reliable Lead Time: We offer a manageable MOQ of 25 tons and maintain a consistent lead time of 15-25 days for most orders, ensuring project timelines are met.
- Secure Packing & Shipping: Steel is packed in seaworthy, moisture-protected bundles (standard export packing) to prevent damage during ocean freight from Tianjin Xingang Port.
- Convenient Payment Terms: We support secure international payment methods, including T/T (Telegraphic Transfer) and L/C (Letter of Credit).
ASTM A653 Galvanized Steel Pricing
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 Tianjin 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.
FAQ
What is the difference between G60 and G90 galvanized coating in ASTM A653?
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.
Can you supply ASTM A653 galvanized steel coils with a smooth surface finish?
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.
What is the typical lead time for shipping to the Middle East or Africa?
Our standard production and preparation lead time is 15-25 days after order confirmation and receipt of payment. Shipping time from Tianjin Xingang 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.
Do you provide mill test certificates for the galvanized steel?
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.
Get Factory Price for ASTM A653 Galvanized Steel
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