Galvanized Coil Supplier | GI Coil Manufacturer & Exporter | Delong Metal

High Quality Galvanized Coil Supplier for Global Markets

Delong Metal is a professional galvanized coil supplier and manufacturer in China, providing high-quality hot-dip galvanized steel coils for construction, automotive, roofing, and industrial manufacturing applications.

With stable production capacity, strict quality inspection, and global export experience, we supply galvanized coil (GI coil) products with consistent zinc coating, excellent corrosion resistance, and competitive factory pricing.

If you are searching for a reliable galvanized coil supplier, Delong Metal is ready to support your project with customized specifications and fast quotation service.

What is Galvanized Coil?

Galvanized coil (GI coil) is a steel coil that has been coated with a layer of zinc to improve corrosion resistance and extend service life. The galvanizing process protects the steel from rusting, making it suitable for outdoor and industrial environments.

Main Types of Galvanized Coil:

• Hot-dip galvanized coil (HDG coil)
• Electro-galvanized coil (EG coil)
• Zinc-coated steel coil for industrial use

Advantages of Galvanized Coil

Galvanized steel coil is widely used due to its excellent performance and cost efficiency.

Key Benefits:

• Excellent corrosion resistance
• Long service life
• Strong mechanical strength
• Good forming and welding performance
• Cost-effective compared to stainless steel
• Suitable for outdoor and humid environments

Galvanized Coil Production Process

At Delong Metal, galvanized coil is produced through a strict and controlled process:

1. Cold rolled steel coil preparation
2. Surface cleaning and degreasing
3. Annealing process
4. Hot-dip zinc coating
5. Cooling and surface treatment
6. Quality inspection and coil packaging

This process ensures consistent zinc coating adhesion and stable product performance.

Galvanized Coil Specifications

We supply galvanized coil in a wide range of specifications:

Thickness:

• 0.12 mm – 3.0 mm

Width:

• 600 mm – 1500 mm (customizable)

Zinc Coating:

• Z30 – Z275 (or customized coating weight)

Coil Weight:

• 3 tons – 25 tons per coil (or as required)

Surface Spangle:

• Regular spangle
• Minimized spangle
• Zero spangle (for painting applications)

Applications of Galvanized Coil

Galvanized coil is widely used across multiple industries:

Construction Industry

• Roofing sheets
• Wall panels
• Steel framing systems

Automotive Industry

• Body panels
• Structural components
• Underbody parts

Home Appliances

• Refrigerator panels
• Air conditioner housings
• Washing machine parts

Industrial Manufacturing

• Steel pipes
• Profile steel
• Fabricated metal products

Why Choose Delong Metal as Your Galvanized Coil Supplier?

1. Factory Direct Supply

We are a manufacturer, not a trading company, ensuring competitive pricing and stable quality.

2. Strict Quality Control

Each coil is tested for:

• Zinc coating weight
• Thickness tolerance
• Surface quality
• Mechanical properties

Mill Test Certificates (MTC) are provided for every shipment.

3. Export Experience

Delong Metal supplies galvanized coil to global markets with full export support:

• FOB / CIF / CFR terms
• Container loading optimization
• Export documentation (CO, invoice, packing list)
• Stable shipping schedule

4. Custom Production

We offer flexible customization:

• Thickness and width
• Zinc coating level
• Surface finish (spangle type)
• Coil weight and packaging

5. Fast Response & Professional Service

Our sales team provides:

• Quick quotation within 12–24 hours
• Technical specification support
• Order tracking and logistics coordination

Quality Control System

To ensure stable supply of galvanized coil, Delong Metal implements strict inspection procedures:

• Raw material inspection
• Zinc bath control monitoring
• Coating thickness testing
• Surface defect inspection
• Final packaging inspection
• Batch traceability system

Packaging & Shipping

We ensure safe international delivery of galvanized coil:

• Waterproof steel packaging
• Edge protection with steel rings
• Wooden pallet or steel frame support
• Proper coil fixation for container transport
• Safe loading for long-distance shipping

Global Markets We Serve

Delong Metal exports galvanized coil to:

• Southeast Asia (Vietnam, Indonesia, Thailand, Philippines)
• Middle East (UAE, Saudi Arabia, Egypt, Iraq)
• South America (Brazil, Chile, Peru, Colombia)
• Africa (Morocco, Algeria, South Africa)

We support long-term cooperation with distributors, manufacturers, and construction companies.

Galvanized Coil Price Factors

The price of galvanized coil depends on several factors:

• Steel raw material cost
• Zinc price fluctuation
• Coating weight (Z30–Z275)
• Thickness and width
• Order quantity
• Shipping terms (FOB/CIF)

Delong Metal always provides competitive factory pricing for bulk orders and long-term contracts.

FAQ – Galvanized Coil Supplier

Q1: What is galvanized coil used for?

It is widely used in roofing, construction, automotive, and industrial manufacturing.

Q2: What is your MOQ?

Normally 25 tons per specification, flexible for trial orders.

Q3: Can you provide samples?

Yes, small samples are available for quality testing.

Q4: Do you provide quality certificates?

Yes, we provide Mill Test Certificates (MTC) for every batch.

Q5: What coating options are available?

We supply Z30 to Z275 or customized zinc coating levels.

Get a Quote from Delong Metal

If you are looking for a reliable galvanized coil supplier, Delong Metal is ready to support your project with stable quality and competitive pricing.

📩 Send Us Your Inquiry

Please include:

• Thickness and width
• Zinc coating requirement
• Coil weight
• Quantity
• Destination port

We will reply within 12–24 hours with the best quotation.

🚀 Why Choose Delong Metal?

• Factory direct galvanized coil supplier
• Stable production and quality control
• Global export experience
• Fast quotation and support
• Long-term supply capability

Final Note

Choosing the right galvanized coil supplier is essential for ensuring product durability and cost efficiency. Delong Metal is committed to providing high-quality galvanized steel coils with stable performance and reliable global delivery.