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The Galvalume Steel Coil Manufacturer!

 

Integrated steel manufacturer specializing in GI, GL, PPGI and PPGL coils. Backed by 10+ years of global trade experience, we provide customized production, export-grade quality control and reliable fast global supply.

 
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Why choose us

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.

 

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.

 

 

Thickness

0.12mm-3.0mm

Customizable according to requirements

Width

40mm-1250mm

Alu-Zinc Coating

AZ20-220g/m²

Hardness

CQ,Full hard, Soft, Middle Hard

Composition

55%Aluminum+45%Zinc

Standard

ASTM-A792, ASTM653, etc

 

Benefits of Galvalume Steel Coil

Superior Corrosion Resistance

Galvalume performs 2–4 times better than galvanized steel in many environments, especially in marine and industrial applications.

 

Heat and UV Reflectivity

Its aluminum content reflects heat and UV radiation, making it ideal for roofing in hot climates by reducing energy costs.

Long Lifespan

With a service life of up to 40+ years, Galvalume requires less maintenance and replacement over time.

Aesthetic Appeal

The surface of Galvalume steel coil is smooth and silvery, offering a clean, modern appearance for exposed applications.

Formability and Weldability

Despite its protective coating, Galvalume remains easy to form, bend, or weld, which is valuable in custom fabrication.

 

Production process

 

Step number

Process Name

Core function

Step 1

Original board pretreatment

Remove oil and oxide layers, relieve internal stress, and enhance coating adhesion

Step 2

Hot dip aluminum zinc plating

Form a uniform 55% Al Zn Si alloy coating to strengthen the foundation anti-corrosion layer

Step 3

Air knife blowing

Ensure uniform coating, no droplets or zinc nodules, and a smooth surface

Step 4

Cooling and setting

Solidify the coating to prevent deformation of the board surface and cracking of the coating

Step 5

Passivation treatment (core)

Improve corrosion resistance, fingerprint resistance, and extend the service life of the coating

Step 6

Post processing refinement

Corrected version, rust proof protection, molded into finished products according to requirements

 

Applications of Galvalume Steel Coil

 
 
01
 

Building:

Roofs, walls, garages, soundproof walls, pipes and modular houses;

 
02
 

Automotive:

Mufflers, exhaust pipes, wiper accessories, fuel tanks and truck boxes;

 
03
 

Home appliances:

Refrigerator back panels, gas stoves, air conditioning units/electronic microwave ovens/LCD frames/CRT explosion-proof belts/LED backlight sources/electric cabinets;

 
04
 

Agriculture use:

Pigsties/chicken coops/grain silos/greenhouse piping;

 
05
 

Others:

Insulation covers/heat exchangers/dryers/water heaters.

Chrmated Galvalume Coil manufacturers

 

Aluminized Zinc Steel Grades and Standards

 

Standard

Grade

Coating Code

ASTM A792

DX51D, DX52D, DX53D

AZ50, AZ55 (50/55 g/m²)

EN 10346

DC51D, DC52D, DC53D

AZ150, AZ200 (150/200 g/m²)

JIS

SGCC

200 g/m²

JIS G3321 (Japanese Standard)

SGCC, SGCH

AZ (Al-Zn)

GB/T 14978 (Chinese National Standard)

DC51D+AZ, DC52D+AZ

AZ (Aluminum Zinc Plated)

 

Quality Certifications

 

productcate-4761-2245

 

Packaging & Delivery

 

Packaging：Steel coil packaging/Steel plate packaging/Strip packaging

 

productcate-1000-324

 

FAQ

 

Q: Will you deliver the goods on time?

A: Yes,we promise to provide best quality products and delivery in time no matter if the price change lot or not, Honesty is our company's tenet.

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

A: The email and fax will be checked in 24 hours, meanwhile, the skype will be online in 24 hours. Please tell us the order information about quantity, Specification(steel type, material, size) and destination port, you will get the latest price.

Q: How about the sample if i need?

A: The sample will be offered for free if you need, but the freight will be covered by our customer. If we have cooperation, the freight will be covered by our company.

Q: How about the MOQ?

A: Generaly, the trail order will be accepted. The MOQ can be confirmed according to the different products.

Q: How about the delivery time?

A: Within 15-30days after receiving the deposit or LC at sight. Of course, the detal will be confirmed by the quantity and the different products

Q: How does Galvalume steel reduce lifecycle costs?

A: Its long lifespan minimizes repair, replacement, and maintenance costs. Though the initial investment may be higher than conventional steel, it saves money over decades by reducing downtime and maintenance needs.

Q: How does Galvalume steel contribute to energy efficiency?

A: Galvalume naturally reflects solar heat, reducing indoor temperatures and lowering air-conditioning and energy costs. This makes it suitable for roofing, exterior panels, and large-scale industrial facilities.

Q: What design flexibility does Galvalume steel offer?

A: It is lightweight yet strong, easy to form, bend, coat, and install, allowing architects and engineers to create functional and visually appealing structures, including roofs, facades, solar mounts, and transport terminals.

Q: Is Galvalume steel sustainable?

A: Yes. It is 100% recyclable, reduces material wastage, has a long service life, and supports energy-efficient designs, making it a material aligned with green building and sustainable infrastructure goals.

Q: Which is better Galvalume or galvanized steel?

A: Galvalume offers better corrosion resistance and longer lifespan, typically 40 to 70 years depending on climate and maintenance. Galvanized steel is less expensive upfront and suited for moderate environments where extreme moisture or industrial pollution is not a major concern.

Q: How long will Galvalume last?

A: Galvalume's formula was designed to combine the toughness and strength of zinc with the rust resistance of aluminum. Research conducted by the Metal Construction Association (MCA) indicates that Galvalume roofing could last as long as 40 to 50+ years without any extreme signs of corrosion.

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

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