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High-Quality Galvanized Steel Coil | Hot Dipped Zinc Coated Steel Coil Manufacturer
Introduction to Galvanized Steel Coils
Galvanized steel coils are among the most widely used metal materials for construction, automotive, roofing, and appliance manufacturing.
They combine the strength of steel with the superior corrosion protection of zinc coating, ensuring a long service life even in harsh environments.
At HaiHong (Jiangsu) Steel International Trade CO.,Ltd, we supply high-quality hot dipped galvanized steel coils with zinc coating from 30g/m² to 275g/m², available in a variety of grades, thicknesses, and surface treatments.
Our factory provides competitive prices, fast delivery, and reliable quality, serving customers across Asia, Europe, the Middle East, and South America.
What Is a Galvanized Steel Coil?
A galvanized steel coil is a cold-rolled steel sheet that has been immersed in a molten zinc bath, forming a protective zinc layer on its surface.
This coating prevents rust and oxidation, significantly extending the steel’s durability and appearance.
Types of Galvanized Steel Coils
| Type | Description | Application |
|---|---|---|
| Hot Dipped Galvanized Coil (GI) | Coated by immersion in molten zinc | Roofing, structural steel, automotive |
| Electro-Galvanized Coil (EG) | Zinc coating by electrolysis | Appliances, interior panels, electronics |
| Galvalume Coil (Al-Zn) | Aluminum-zinc alloy coating | High corrosion resistance, roofing, panels |
| Pre-painted Galvanized Coil (PPGI) | Color coated surface | Decorative wall panels, roofing sheets |
Main Features and Advantages
1. Excellent Corrosion Resistance
The zinc coating protects steel from oxidation and rust, extending product life up to 20 years or more.
2. Smooth and Shiny Surface
Beautiful metallic finish suitable for both industrial and decorative use.
3. High Strength and Formability
Easy to cut, bend, weld, and roll, ideal for various manufacturing applications.
4. Strong Adhesion of Zinc Layer
Even coating ensures stable protection and durability.
5. Economical and Environmentally Friendly
Cost-effective alternative to stainless steel with excellent recyclability.
Technical Specifications
| Item | Specification |
|---|---|
| Material Grade | SGCC, DX51D, DX52D, DX53D, ASTM A653, CS Type B |
| Thickness | 0.12mm – 4.0mm |
| Width | 600mm – 1500mm |
| Coil Weight | 3 – 10 tons |
| Zinc Coating | Z30 – Z275 g/m² |
| Surface Finish | Regular Spangle / Zero Spangle / Bright / Matte |
| Surface Treatment | Chromated, Oiled, Anti-finger |
| Standard | ASTM, JIS, EN, GB/T |
Applications of Galvanized Steel Coils
1. Construction and Roofing
Used for roofing sheets, wall panels, gutters, and steel frames, providing long-term protection against corrosion.
2. Automotive and Machinery
Applied to automotive panels, engine parts, and machinery casings due to its durability and easy formability.
3. Household Appliances
Commonly used in refrigerators, washing machines, and air conditioners for anti-corrosion performance.
4. Industrial and Agricultural Equipment
Ideal for steel warehouses, ventilation ducts, and grain silos.
Why Choose HaiHong (Jiangsu) Steel International Trade CO.,Ltd?
Factory Direct Supply – Stable quality with competitive pricing.
⚙️ Advanced Production Lines – Continuous galvanizing and color coating lines.
Global Export Experience – Trusted by clients from 50+ countries.
✅ Certified Quality – ISO, SGS, and Mill Test Certificates (MTC) available.
Customizable Options – Thickness, coating weight, and width tailored to your project.
Call to Action
Looking for a reliable galvanized steel coil manufacturer with global export experience?
HaiHong (Jiangsu) Steel International Trade CO.,Ltd offers hot dipped and electro-galvanized steel coils with factory prices, fast delivery, and guaranteed quality.
Email: haihonginternationaltrade@gmail.com,cheng@haihong-steel.com,info@haihong-steel.com
Tel/WhatsApp: +86 18114884888,+86 13773560716,+86 18652578808
Contact us today for a free quotation and full product catalog!
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