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The Galvanized Steel Coil Manufacturer!

 

Integrated steel manufacturer specializing in GI, PPGI, and GL coils, offering customized production, export-standard quality control, and fast global supply with 10+ years of trade experience.

 
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Why choose us

Our Service

24-hour quick response to inquiries, providing product selection, specification customization (thickness/width/coating) consultation and free sample delivery.

 

Adapting to target market standards (ASTM/JIS, etc.), offering cost accounting, quotation solutions and compliant trade suggestions.

Production Market

Covering key markets in Southeast Asia, South America, Central Asia and Africa, and expanding into the United States, Canada, Mexico, the United Arab Emirates and other countries.

Our Certificate

Certified with ISO 9001, ISO 14001, ISO 45001, SGS, and AAA Credit Rating, ensuring quality manufacturing, environmental responsibility, workplace safety, and trusted global business standards.

 

Parameter

Details

Substrate Type

Hot-dip Galvanized Steel (GI), Galvalume Steel (GL), Cold Rolled Steel

Coating Type

Electrostatic Powder Coating (Customizable special powder such as fluoroplastic)

Sheet Thickness

0.09–1.5mm

Sheet Width

700–1250 mm (Customizable)

Coating Thickness

Front: 50\30μm; Back: Customizable

Surface Texture

Smooth, Matte, Frosted, etc. (Customizable)

Color Range

Full color customization, support RAL/Pantone color matching

Compliance Standards

GB/T 12754, ASTM A755, EN 10169, JIS G 3312

 

Advantages of Galvanized Steel Coil

 

Galvanized Corrugated Roofing Sheet Z30-Z275 Zinc Coating

Enhance corrosion resistance:

During use, steel is easily corroded by corrosive substances such as oxygen, water, and carbon dioxide, leading to rust and corrosion of steel. Through the treatment of galvanized steel coils, a strong zinc layer can be formed on the surface of the steel to effectively prevent the steel from corrosion.

Galvanized Corrugated Roofing Sheet Z30-Z275 Zinc Coating

Enhance the aesthetics:

After the steel is galvanized, the surface shows a bright silver luster, which is not only beautiful but also has a longer life.

Galvanized GI Steel Sheet Spangle Types: Regular, Minimized, Zero Spangle Supplier

Convenient processing:

Galvanized sheet plate has good processing properties and can be easily processed by cutting, bending and welding. They are widely used in construction, home furnishing, manufacturing and other fields.

 

Methods of Galvanising Steel Coils

 

Method

Process Description

Coating Characteristics/ Quality

Ideal Applications & End-use Industries

Hot-dipped Galvanising

Steel is immersed in molten zinc at high temperatures, forming a thick, metallurgically bonded zinc coating.

Produces a thick, durable coating with excellent corrosion resistance and a slightly rough surface texture.

Best suited for construction, infrastructure, and outdoor structural components such as guardrails, roofing sheets, and beams exposed to weather.

Galvanealing

Combines hot-dipping with annealing – steel is dipped in molten zinc and then heat-treated to create a matte grey finish.

Results in a zinc-iron alloy coating with superior paintability and surface adhesion.

Common in automotive manufacturing and appliance fabrication where a smooth, paint-ready surface is needed.

Pre-Galvanising (Mill Galvanising)

Performed in steel mills before fabrication – the steel sheet is passed through molten zinc and recoiled immediately.

Offers uniform coating thickness and quick production. Coating is thinner than hot-dipped.

Suitable for light fabrication, ducting, and indoor applications where less corrosion exposure is expected.

Electrogalvanising

Uses an electrolytic process to coat steel with a controlled layer of zinc without immersion in molten zinc.

Produces a thin, smooth, and precise coating with excellent surface finish but lower corrosion resistance than hot-dipped.

Ideal for automotive panels, electronic housings, and consumer appliances requiring smooth aesthetics and precision.

Galvanising of Advanced High-Strength Steel (AHSS)

Involves dipping AHSS in molten zinc with controlled chemical treatment for improved adhesion and strength.

Ensures high-strength, formable coating with enhanced bonding and durability.

Used in automotive body structures, safety components, and industrial machinery that require both strength and corrosion resistance.

 

Electrostatic Powder Coated Color Sheet | Anti-corrosion Eco-friendly Manufacturer

 

Applications of Galvanized Steel Coil

Building and Construction: Widely used in roofing, siding, gutters, and decking, galvanized steel offers protection against rust even in harsh outdoor conditions.

 

Automotive Industry: Essential for manufacturing vehicle panels, chassis parts, and other components due to its impact resistance and rust prevention qualities.

 

Appliances: Provides sturdy support and rust protection for appliances like refrigerators and washing machines.

 

Storage Systems: Ideal for shelving, containers, and cabinets, offering durability for both indoor and outdoor use.

 

Infrastructure: Used in lamp posts, railings, and bollards due to its resistance to corrosion in moist or polluted environments.

 

Choose the right galvanized coil in 3 steps
 
 

Determine the process:

Choose hot-dip galvanizing (GI) for outdoor heavy-duty corrosion protection, and choose electroplating galvanizing (EG) for precision parts

 
 
 

Check the parameters:

Choose zinc layer according to the environment (humid environment ≥ Z180), choose brand according to processing (choose DX53D for stamping)

 
 
 

Check the surface:

Chromium-free passivation is required for export, and fingerprint-resistant treatment is selected for subsequent spraying

 

 

Quality Certifications

 

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Packaging & Delivery

 

Standard Packaging:

Waterproof moisture-proof paper + steel strip fixing + solid wood pallet, effectively avoiding bumps and moisture during transportation, ensuring the products are delivered intact.

Lead Time:

7-15 Days after receiving the deposit (adjustable according to order quantity)

Loading Port:

Qingdao Port, Tianjin Port, support global logistics distribution

 

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FAQ

 

Q: Can you guarantee on-time delivery?

A: Yes, we promise to deliver high-quality products on time no matter how the market price fluctuates, honesty is our company tenet.

Q: How can I get the quotation as soon as possible?

A: Our customer service and email will respond to your needs within 24 hours. Please tell us the order quantity, product specifications (steel type, size, etc.) and destination port, we will provide you with the latest quotation.

Q: What is the process of galvanized steel coil?

A: After cold rolling, the steel is directly sent to the hot-dip galvanizing unit. The steel strip is first burned in the continuous annealing process, and a thin oxide film is formed on the surface of the strip, and then passed through the reduction section of the annealing furnace.

Q: Can you provide samples?

A: We can provide free samples for you, the sample freight needs to be borne by you; if we reach cooperation later, the freight will be borne by our company.

Q: What is the MOQ?

A: The conventional MOQ is 5 tons, we also accept trial orders, the specific MOQ can be negotiated according to your needs.

Q: How long is the delivery time?

A: For conventional orders, delivery will be made within 15-30 days after receiving the deposit or sight L/C, the specific time will be confirmed according to the order quantity and product situation.

As one of the most professional galvanized steel coil manufacturers and suppliers in China, we're featured by quality products and good price. If you're going to wholesale bulk galvanized steel coil made in China, welcome to get free sample from our factory. Customized orders are welcome.

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