Exclusive Galvanized Steel Coils | Heavy-Duty Anti-Rust Construction

​Product Overview

Our ​galvanized steel coils are engineered for superior corrosion resistance and structural durability, specifically tailored for heavy-duty construction projects. Manufactured by leading ​galvanized steel coil manufacturers, these coils combine a ​hot-dipped galvanized coating with advanced anti-rust treatments, ensuring longevity in harsh environments such as coastal areas or industrial zones. Ideal for roofing, framing, and infrastructure, these coils are the backbone of modern construction.

​Product Specifications

​Technical Properties & Performance

​1. Tensile Strength & Bendability

The ​galvanized steel coils exhibit a tensile strength range of ​350–550 MPa, achieved through precision cold-rolling and annealing processes. This ensures structural integrity under extreme loads, making them suitable for roofing sheets, industrial machinery, and high-stress frameworks. Bendability is optimized with a minimum bend radius of ​1.5x thickness, preventing cracks even in complex forming operations.

​2. Anti-Rust Mechanism

The ​hot-dipped galvanized coating provides dual protection:

• ​Zinc Layer: Acts as a sacrificial barrier, corroding before the steel substrate.
• ​Anti-Rust Oil: A transparent oil layer further blocks moisture and UV exposure, extending lifespan by 20–30 years.

​3. Weight Calculation

Calculate coil weight using:
$\text{Weight (kg/m²)}=\text{Thickness (mm)}\times \text{Width (mm)}\times 7.85(\text{Steel Density})$
Example: A 1.5mm-thick, 1200mm-wide coil weighs ​14.13 kg/m².

​4. Identification & Grading

Coils are labeled per international standards (e.g., ​ASTM A653 or ​EN 10346):

• ​Coating Mass: Z275 (275 g/m² zinc).
• ​Grade: DX51D (construction), S350GD (structural).
• ​Surface Code: Oiled (O), Chromated (C).

​5. Causes of Stainless Steel Rusting

While stainless steel is corrosion-resistant, rusting may occur due to:

• ​Chloride Exposure: Coastal or de-icing salt environments degrade passive layers.
• ​Mechanical Damage: Scratches or abrasions expose underlying steel.
• ​Chemical Contamination: Contact with acids or iron particles accelerates oxidation.

​Why Choose Our Galvanized Steel Coils?

​1. Precision Manufacturing

As trusted ​galvanized steel coil manufacturers, we use laser-guided cold-rolling mills and automated galvanizing lines to ensure:

• ​Coating Uniformity: ±0.02mm thickness tolerance.
• ​Surface Perfection: Zero spangle for aesthetic applications.

​2. Custom Solutions

• ​Tailored Dimensions: Non-standard widths (up to 3000mm) or lengths.
• ​Specialized Coatings: Chromate passivation for enhanced adhesion in painted systems.
• ​Certifications: CE, ISO 9001, and RoHS compliance.

​3. Cost-Effective Durability

• ​Low Maintenance: Reduced lifecycle costs for infrastructure projects.
• ​Recyclability: 100% recyclable material, supporting green building initiatives.

​4. Global Logistics & Support

• ​Fast Delivery: Partnered logistics ensure timely shipments to 50+ countries.
• ​24/7 Technical Support: Expert guidance on material selection and fabrication.

​Applications

• ​Roofing & Cladding: Compatible with ​1 3 4 hot dipped galvanized coil roofing nails for secure installation.
• ​Structural Framing: High-strength G550 grade for skyscrapers and bridges.
• ​Industrial Machinery: Corrosion-resistant casings and components.

​Why Choose Our Stainless Steel Solutions? (Bottom of Page)

While our ​galvanized steel coils excel in rust prevention, our stainless steel range is ideal for ultra-demanding environments:

1. ​Premium Alloys: 304/316L grades with 18% chromium and 8–10% nickel.
2. ​Certified Quality: ASTM A240, EN 10088-2 compliant.
3. ​Aesthetic Versatility: Brushed or mirror finishes for architectural projects.