Global steel trade has changed dramatically over the past few years. While demand for Galvalume (Aluzinc) steel coils continues to grow in roofing, construction, appliances, and manufacturing, many exporters are facing increasing trade barriers, particularly anti-dumping duties imposed by various countries.

For Chinese steel exporters, one of the most significant developments has been the anti-dumping measures introduced by Brazil on certain imported steel products. Depending on the product category and producer, anti-dumping duties on Chinese-origin galvanized steel coils (GI), Galvalume/Aluzinc steel coils (GL), and pre-painted galvanized/Galvalume steel coils (PPGI/PPGL) can reach approximately USD 545–645 per metric ton, significantly increasing import costs for Brazilian buyers.

As a result, more international customers are looking for reliable supply chains outside mainland China while still expecting the same manufacturing quality, production capacity, and competitive pricing.

To better serve global customers, our company has established new Galvalume/Aluzinc steel coil manufacturing facilities in both Vietnam and Cambodia. These investments allow us to build a more flexible international supply network, reduce trade risks, shorten delivery times for certain markets, and, where applicable under the relevant rules of origin and trade regulations, provide products from manufacturing bases that may not be subject to the same anti-dumping measures applied to Chinese-origin steel.

This article explains everything buyers should know about Galvalume/Aluzinc steel coils, their specifications, applications, manufacturing advantages, and why our Vietnam and Cambodia factories are becoming strategic production hubs for customers worldwide.

What Is Galvalume (Aluzinc) Steel Coil?

Galvalume steel coil, also known as Aluzinc steel coil, is a cold-rolled steel sheet coated with an aluminum-zinc alloy through a continuous hot-dip process.

Unlike traditional galvanized steel, which uses a zinc coating, Galvalume combines aluminum and zinc to provide enhanced corrosion resistance and heat performance.

The coating typically consists of:

• Approximately 55% Aluminum

• Approximately 43.4% Zinc

• Approximately 1.6% Silicon

This unique composition combines the corrosion protection of aluminum with the sacrificial protection of zinc.

Because of these advantages, Galvalume has become one of the most widely used coated steel materials for modern construction and industrial manufacturing.

How Does Galvalume Steel Work?

The excellent performance of Galvalume comes from the interaction between aluminum and zinc.

Aluminum forms a dense oxide layer on the surface, protecting the steel from moisture and oxygen.

When scratches or cut edges occur, the zinc provides sacrificial corrosion protection, slowing rust formation.

The silicon in the coating improves adhesion between the alloy coating and the steel substrate.

This combination provides:

• Longer service life

• Excellent weather resistance

• Superior heat resistance

• Attractive metallic appearance

• Reduced maintenance costs

Compared with conventional galvanized steel, Galvalume can provide a substantially longer service life in many outdoor environments, depending on exposure conditions.

Standard Specifications of Galvalume Steel Coil

Our Vietnam and Cambodia factories manufacture a wide range of specifications to meet global customer requirements.

Typical production range includes:

Thickness

• 0.18 mm

• 0.20 mm

• 0.25 mm

• 0.30 mm

• 0.35 mm

• 0.40 mm

• 0.45 mm

• 0.50 mm

• 0.60 mm

• 0.80 mm

• 1.00 mm

• Up to 2.0 mm

Width

• 600 mm

• 750 mm

• 914 mm

• 1000 mm

• 1200 mm

• 1250 mm

• Custom widths

Coil Weight

• 3–10 metric tons

• Custom coil weights available

AZ Coating

• AZ30

• AZ50

• AZ70

• AZ100

• AZ150

• AZ180

• AZ200

Surface Finish

• Regular Spangle

• Mini Spangle

• Skin Passed

• Chromated

• Non-Chromated

• Anti-Fingerprint

Steel Grades

• DX51D

• DX52D

• DX53D

• SGLCC

• ASTM A792

• JIS G3321

• EN10346

Major Applications of Galvalume Steel Coil

Thanks to its corrosion resistance and attractive appearance, Galvalume steel is used across many industries.

Common applications include:

Roofing Sheets

One of the largest applications worldwide.

Galvalume roofing provides:

• Long service life

• Excellent weather resistance

• Lower maintenance costs

• Reflective surface for improved energy efficiency

Wall Cladding

Commercial and industrial buildings use Galvalume panels because they combine aesthetics with durability.

Steel Structures

Steel buildings frequently incorporate Galvalume components for improved corrosion protection.

Household Appliances

Manufacturers use Aluzinc steel for:

• Refrigerators

• Washing machines

• Ovens

• Air conditioners

Ceiling Systems

The smooth surface and excellent formability make Galvalume suitable for suspended ceilings.

Roll Forming Industry

Galvalume coils are widely processed into:

• Roofing profiles

• C channels

• Decking

• Purlins

• Fencing systems

China's Position in the Global Galvalume Export Market

China remains one of the world's largest producers and exporters of coated steel products.

Chinese manufacturers offer:

• Large production capacity

• Advanced coating lines

• Competitive manufacturing costs

• Mature supply chains

• Extensive export experience

Chinese Galvalume coils are exported to:

• South America

• Southeast Asia

• Africa

• Middle East

• Europe

However, as international trade policies continue to evolve, some importing countries have introduced anti-dumping or trade remedy measures affecting certain Chinese-origin coated steel products.

For buyers, this has increased the importance of supply chain diversification and regional manufacturing.

Brazil's Anti-Dumping Duties and Their Impact

Brazil is one of the fastest-growing markets for coated steel products used in construction and manufacturing.

However, anti-dumping duties on certain Chinese-origin galvanized steel coils (GI), Galvalume/Aluzinc steel coils (GL), and pre-painted coated coils (PPGI/PPGL) can significantly increase landed costs. Depending on the applicable product and producer, these duties have been reported in the range of approximately USD 545–645 per metric ton.

For importers, such additional costs can:

• Reduce price competitiveness

• Increase procurement budgets

• Delay projects

• Shift sourcing decisions toward other manufacturing countries

This has encouraged many buyers to seek alternative production bases outside mainland China.

Why We Built New Factories in Vietnam and Cambodia

Recognizing these global trade trends, our company invested in modern coated steel manufacturing facilities in Vietnam and Cambodia.

These factories are more than production sites—they are part of a long-term global manufacturing strategy designed to provide customers with greater supply chain flexibility.

1. Diversified Manufacturing Capacity

Operating in multiple countries reduces dependence on a single manufacturing location and helps ensure business continuity.

2. Better Supply Chain Resilience

Regional production helps reduce risks associated with changing trade policies, logistics disruptions, and market fluctuations.

3. More Flexible Export Options

Manufacturing in Vietnam and Cambodia allows us to serve customers in different regions through production bases that may offer different market access opportunities depending on the destination country's trade rules and origin requirements.

4. Faster Regional Deliveries

For customers in Southeast Asia and neighboring markets, local production can reduce transportation time and improve delivery efficiency.

5. Long-Term International Strategy

Rather than simply expanding capacity, our goal is to build a globally integrated manufacturing network that supports customers with stable supply, consistent quality, and flexible sourcing options.

Advantages of Our Vietnam Factory

Vietnam has become one of Asia's fastest-growing manufacturing hubs.

Key advantages include:

• Modern industrial infrastructure

• Skilled workforce

• Well-developed port facilities

• Strong manufacturing ecosystem

• Stable export logistics

Our Vietnam plant manufactures:

• Galvalume Steel Coil

• Galvanized Steel Coil

• PPGI

• PPGL

• Corrugated Roofing Sheets

Products are manufactured under strict quality control using advanced coating technologies to ensure consistency with international standards.

Advantages of Our Cambodia Factory

Cambodia has emerged as an attractive manufacturing destination for export-oriented industries.

Our Cambodia facility offers:

• Competitive production efficiency

• Modern production equipment

• Flexible manufacturing capacity

• Growing logistics capabilities

• Strategic location within Southeast Asia

The factory focuses on supplying export markets with coated steel products while supporting customers seeking diversified sourcing options.

Export Opportunities for Global Buyers

Many international customers today evaluate suppliers not only by price but also by supply chain flexibility.

Our Vietnam and Cambodia production bases help customers by providing:

• Stable production capacity

• Diversified sourcing

• Flexible logistics

• Professional export documentation

• Consistent product quality

For some destination markets—including Brazil—products manufactured in Vietnam or Cambodia may qualify for different tariff treatment than Chinese-origin products, provided they satisfy the importing country's applicable customs rules, rules of origin, and trade regulations. Buyers should always verify the latest import requirements with their customs brokers or legal advisors before making purchasing decisions.

Why More Buyers Prefer Multi-Country Manufacturing

Based on our experience working with international distributors and roofing manufacturers, purchasing decisions have changed significantly.

Five years ago, customers mainly compared:

• Price

• Delivery time

Today, they also consider:

• Country of origin

• Trade policy risks

• Supply chain stability

• Long-term procurement strategy

• Customs compliance

A supplier with manufacturing facilities in multiple countries provides greater flexibility than relying on a single production base.

Why Choose Our Galvalume Steel Coil Factory?

Our manufacturing network combines Chinese production expertise with international manufacturing expansion.

We provide:

• Advanced continuous coating lines

• Strict quality inspection

• OEM production

• Customized specifications

• Fast production scheduling

• Global logistics support

• Professional export documentation

• Technical support

Whether customers require standard coils or customized coated steel products, we offer comprehensive solutions tailored to different markets.

Practical Experience from International Steel Exports

Working with overseas customers has shown us that price is no longer the only factor influencing purchasing decisions.

Many distributors now ask:

• Which country manufactures the product?

• What are the applicable import duties?

• Is the supply chain stable?

• Can future policy changes affect shipments?

Building factories in Vietnam and Cambodia was our response to these evolving market needs.

Another lesson is the importance of documentation. Even when products are manufactured outside China, buyers should ensure that certificates of origin and all customs documentation are complete and comply with the importing country's regulations. Working with experienced manufacturers and customs professionals can help avoid unnecessary delays.

Finally, maintaining identical quality standards across multiple factories is essential. Our engineering, quality control, and production systems are standardized so customers receive consistent performance regardless of whether the coils are produced in Vietnam or Cambodia.

Frequently Asked Questions

1. What is Galvalume steel coil?

Galvalume steel coil is a steel sheet coated with an aluminum-zinc alloy that provides excellent corrosion resistance, heat resistance, and durability.

2. What is the difference between Galvalume and galvanized steel?

Galvalume uses an aluminum-zinc coating, while galvanized steel uses a zinc coating. Galvalume generally offers better corrosion resistance and heat reflectivity in many applications.

3. What coating thicknesses are available?

Common AZ coatings include AZ30, AZ50, AZ70, AZ100, AZ150, AZ180, and AZ200.

4. What industries use Galvalume steel?

Construction, roofing, wall cladding, home appliances, steel structures, roll forming, HVAC systems, and industrial manufacturing.

5. Why did your company build factories in Vietnam and Cambodia?

To expand manufacturing capacity, diversify supply chains, improve logistics flexibility, and better serve international customers in response to changing global trade conditions.

6. Can products from Vietnam or Cambodia avoid the same anti-dumping duties applied to Chinese-origin steel?

Depending on the destination market and whether the products satisfy the applicable rules of origin and customs requirements, products manufactured in Vietnam or Cambodia may be subject to different tariff treatment than Chinese-origin products. Buyers should verify the latest regulations with customs professionals.

7. Can you manufacture customized specifications?

Yes. We offer customized thicknesses, widths, coating weights, steel grades, surface finishes, and packaging.

8. What quality standards do you follow?

Our factories produce according to international standards such as ASTM, JIS, and EN, depending on customer requirements.

9. Which countries do you export to?

We supply customers across South America, Southeast Asia, the Middle East, Africa, Europe, and other international markets.

10. Why should buyers choose a supplier with factories in multiple countries?

Multi-country manufacturing provides greater supply chain resilience, sourcing flexibility, reduced logistics risks, and more options for serving different export markets while adapting to changing international trade policies.

Conclusion

The global coated steel industry is entering a new phase where supply chain flexibility is just as important as product quality and price. While Galvalume (Aluzinc) steel coils remain one of the best materials for roofing, construction, appliances, and industrial manufacturing due to their excellent corrosion resistance, heat reflectivity, and long service life, international buyers must also consider trade policies, import duties, and sourcing strategies.

Our investment in Vietnam and Cambodia represents a long-term commitment to building a diversified global manufacturing network. By combining decades of coated steel production experience with modern manufacturing facilities in Southeast Asia, we are able to provide customers with high-quality Galvalume/Aluzinc steel coils, galvanized steel coils (GI), PPGI, and PPGL while offering greater supply chain resilience and more flexible export solutions.

For buyers serving markets such as Brazil, South America, Southeast Asia, the Middle East, Africa, and Europe, choosing the right manufacturing base can help improve competitiveness, reduce procurement risks, and create more stable long-term partnerships. Depending on the importing country's applicable rules of origin and trade regulations, products manufactured in our Vietnam or Cambodia factories may qualify for different tariff treatment than Chinese-origin products, potentially helping customers optimize their import costs.

Whether you need standard AZ-coated coils, customized dimensions, OEM production, or a reliable export partner, our experienced engineering team, strict quality management system, and international logistics expertise ensure that every order meets global standards. We are committed to delivering not only premium coated steel products but also a smarter, more sustainable, and future-ready supply chain for customers worldwide.