Premium Hot Dip Galvanized Steel Sheet & Coil Manufacturer
Are you sourcing reliable Galvanized Steel Sheets or GI Coils for your project? You have found the right partner.
As a professional steel supplier based in China, we specialize in manufacturing and exporting high-quality **Hot Dip Galvanized Steel (HDG)** to global markets. We understand that international buyers value three things: consistent quality, competitive factory pricing, and safe delivery. We deliver on all three.
Product Specifications & Customization
We offer a wide range of specifications to meet your exact project requirements. Whether you need thin gauge sheets for roofing or heavy-duty coils for structural use, we have you covered.
**Key Technical Parameters:**
* **Product Name:** Hot Dip Galvanized Steel Coil / Sheet (GI)
* **Steel Grade Options:**
* **Commercial Quality:** DX51D, SGCC, CS Type A/B/C
* **Structural Quality:** S220GD, S250GD, S350GD, S550GD
* **Zinc Coating Weight:** Customizable from **Z40 (40g/m²)** up to **Z275 (275g/m²)**. We also support G30, G60, and G90 standards.
* **Thickness Range:** Precision rolling from **0.12mm to 4.0mm**.
* **Width Range:** Standard widths include **914mm, 1000mm, 1200mm, and 1250mm**. Custom slitting is available from 600mm to 1500mm.
* **Surface Structure (Spangle):**
* **Regular Spangle:** The classic zinc flower look.
* **Minimized / Zero Spangle:** A smooth, uniform finish ideal for painting.
* **Surface Treatment:** Chromated (anti-rust), Oiled, or Anti-Fingerprint (AFP).
* **Coil Internal Diameter (ID):** Standard 508mm or 610mm.
Why Buy Galvanized Steel From Us?
1. Superior Corrosion Resistance
Our galvanized steel is produced using the continuous hot-dip process. The zinc coating provides a tough physical barrier and electrochemical protection. For high-humidity or coastal environments, we highly recommend our **Z275 (G90)** coating, which offers the maximum lifespan against rust.
2. Strict Quality Control (ISO Certified)
Quality is not just a promise; it is our protocol. Every coil undergoes rigorous testing before leaving our factory:
Zinc Coating Test:** Ensuring the weight meets your specifications (e.g., exactly 180g/m²).
Tensile & Yield Strength Test:** Ensuring the steel meets ASTM or EN standards.
Bending Test:Ensuring the zinc layer does not peel off during forming.
3. Expert Export Packaging
We know the risks of ocean freight. To prevent "White Rust" (corrosion caused by moisture during shipping), we use a multi-layer protection system:
Inner Layer:Waterproof anti-rust paper.
Middle Layer:Plastic film protection.
Outer Layer:Galvanized steel sheet wrapper with steel corner guards.
Secure Loading:Coils are strapped and fixed to wooden skids to prevent movement inside the container.
Applications of Our GI Steel
Our products are trusted by clients in various industries worldwide:
Construction:Roofing sheets, ceiling grids, HVAC ductwork, Sandwich panels.
Automotive:Body panels, reinforcements, and underbody components.
Home Appliances:Casings for washing machines, refrigerators, and air conditioners.
General Manufacturing:Electrical cabinets, vending machines, and furniture.
Frequently Asked Questions (FAQ)
Q: What is the difference between SGCC and DX51D?
A: They are essentially the same material but defined by different standards. SGCCis the Japanese standard (JIS G3302) for commercial quality hot-dip galvanized steel. **DX51D** is the European equivalent (EN 10346). Both are suitable for bending and simple forming.
Q: Can you provide samples?
A: Yes, we provide free A4-sized samples for quality inspection. You only need to cover the courier cost.
Q: What is your Minimum Order Quantity (MOQ)?
A: Our standard MOQ is 25 tons (one 20ft container). However, we can accept smaller trial orders for stock specifications.
Get Your Factory Direct Quote Today
Stop paying middleman fees. Source directly from the manufacturer for the best price and quality assurance.
Contact us now with your required thickness, width, zinc coating, and quantity. Our sales team will reply with a detailed quotation within 24 hours.