Galvalume steel coil, also known as GL coil or AZ coated steel, is a premium coated steel product offering superior corrosion resistance and longevity. This product is a cold-rolled steel substrate continuously hot-dip coated with a unique alloy of approximately 55% aluminum, 43.5% zinc, and 1.5% silicon. The result is a 55% aluminum zinc coated coil that combines the barrier protection of aluminum with the galvanic protection of zinc, making it an excellent, cost-effective alternative to traditional galvanized steel for demanding environments. ChinaCNU Steel, with over 15 years of expertise, supplies high-quality Galvalume coils from our factory in Qingdao, China, to a global clientele.
Our Galvalume steel coils are manufactured to meet international standards, ensuring consistent quality and performance for various construction and industrial applications.
| Grade | Thickness (mm) | Width (mm) | Coating Type | Coating Mass (g/m²) | Standard |
|---|---|---|---|---|---|
| DX51D+AZ, DX52D+AZ, DX53D+AZ | 0.20 – 2.0 | 600 – 1500 | 55% Al-Zn (Galvalume) | 60 – 180 | ASTM A792, EN 10346, JIS G3321 |
| S280GD+AZ, S350GD+AZ | 0.35 – 2.0 | 800 – 1250 | Aluminum Zinc Alloy Coated | 100 – 150 | ASTM A792, EN 10346 |
| Commercial Quality (CQ) | 0.30 – 1.5 | 900 – 1200 | GL Coil Coating | 70 – 120 | Customer Specification |
The exceptional durability and corrosion resistance of Galvalume coils make them suitable for a wide range of industries and structural uses.
When sourcing your AZ coated steel, partnering with a reliable manufacturer is crucial. Here’s why global buyers trust ChinaCNU.
The price for 55% aluminum zinc coated coil fluctuates based on raw material costs (steel, zinc, aluminum), coating weight, thickness, and international market trends. We provide transparent FOB Qingdao port pricing, which includes all costs up to loading on the vessel at our nearest port. For the most accurate and competitive factory price for your specific GL coil requirements, please contact us for a free, no-obligation quote. Our team will respond with detailed pricing within 24 hours.
The primary advantage of Galvalume steel coil is its significantly enhanced corrosion resistance, which can be 2 to 4 times greater than that of conventional galvanized steel of equivalent coating thickness. This is due to the synergistic protective action of the aluminum-zinc coating, making it ideal for long-lasting roofing sheets and industrial cladding in corrosive environments.
Yes, we can supply pre-painted Galvalume coils (PPGI). Our factory can apply various paint systems (PVDF, HDP, SMP) on the Galvalume substrate to provide additional color options, UV resistance, and aesthetic appeal for architectural building panels and modern facade designs.
ChinaCNU Steel offers secure and flexible international payment terms, primarily by Telegraphic Transfer (T/T) with a standard deposit, or by Irrevocable Letter of Credit (L/C) at sight. We work with buyers to establish mutually agreeable terms that ensure a smooth transaction for bulk steel coil orders.
Selecting the correct coating mass (e.g., 100g/m², 150g/m²) depends on the environmental corrosivity and the expected service life of your product. For standard roofing in non-coastal areas, a lighter coating may suffice. For severe industrial or marine atmospheres, a heavier aluminum zinc alloy coating is recommended. Our technical team can advise based on your specific application.
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Send us your specs and get a free FOB Qingdao quote within 24 hours.
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