Galvanized Steel Coil (GI Coil) - Your Trusted Solution for Corrosion-Resistant Metal Needs
Whether you’re in construction, automotive manufacturing, or home appliance production, our galvanized steel coils deliver unmatched durability, versatility, and cost-effectiveness. Engineered with advanced zinc-coating technology, each coil is designed to withstand harsh environments while meeting global quality standards.
1. Product Overview: What Is a Galvanized Steel Coil?
A galvanized steel coil (often abbreviated as GI Coil) is a carbon steel coil coated with a layer of zinc through either hot-dip galvanizing or electro-galvanizing processes. The zinc coating acts as a protective barrier, preventing steel from rusting and corroding—extending the product’s lifespan by 5-10 times compared to uncoated steel.
Our coils are available in two main types to suit diverse needs:
Hot-Dip Galvanized Coil (HDG Coil): Created by immersing steel in molten zinc (450°C), forming a thick, adherent zinc-iron alloy layer. Ideal for outdoor and heavy-duty applications (e.g., roofing, infrastructure).
Electro-Galvanized Coil (EG Coil): Coated via an electrolytic process, resulting in a thinner, smoother zinc layer. Perfect for indoor uses requiring a polished finish (e.g., home appliances, decorative parts).
2. Core Advantages: Why Choose Our Galvanized Coils?
✅ Superior Corrosion Resistance
The zinc coating acts as a “sacrificial anode,” protecting the underlying steel even if the coating is scratched. Our coils maintain integrity in humid, salty, or industrial environments—ideal for coastal buildings, outdoor fencing, and marine equipment.
✅ Exceptional Durability & Strength
Made from high-quality low-carbon steel (Q195, Q235, SPCC, etc.), our coils offer tensile strength ranging from 300-550 MPa. They resist bending, impact, and deformation, making them suitable for heavy-duty fabrication (e.g., automotive frames, industrial ducts).
✅ Versatile Applications
From construction to electronics, our galvanized coils adapt to diverse industries:
✅ Cost-Effective & Eco-Friendly
Galvanizing is one of the most affordable anti-corrosion solutions—lower long-term maintenance costs than painting or plating. Additionally, our coils are 100% recyclable, aligning with sustainable manufacturing goals.
3. Technical Specifications
We offer customizable specifications to meet your project requirements. Below are standard parameters:
4. Quality Assurance
We prioritize consistency and reliability in every coil:
In-Process Testing: Zinc coating thickness, adhesion, and corrosion resistance are tested at every production stage (using salt spray tests, bend tests, and coating weight analyzers).
5. Packaging & Shipping
To ensure damage-free delivery, our coils are packaged with:
We ship globally via sea (FCL/LCL), air, or land, with fast lead times (7-15 days for standard orders, 20-30 days for custom specifications).
6. Contact Us for a Custom Quote
Ready to find the perfect galvanized coil for your project? Contact our sales team with your requirements (thickness, width, coating type, quantity), and we’ll provide a tailored solution and competitive pricing.