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Galvalume steel coil - GL

Origin: Viet Nam
Type: Flat steel

Standard

JIS G3321, BSEN 10346, AS 1397, ASTM A792-A972M

Tensile strength

≥ 270 (N/mm2)

Base metal thickness

0,15 - 1,5 (mm)

Width

750 - 1250 (mm)

Coil ID

508 (±10), 610 (±10) (mm)

Coil OD

900 ≤ Φ ≤ 2000 (mm)

Coil weight

≤ 25 ton

Coating mass

AZ040 - AZ200

T-bend

≤2T

Application

Roofing, partition, bare board, Rolling door, bare to paint, gutter. Other building construction uses: batten, C - truss, frame,...

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Product Description

Galvalume steel coil is revolutionizing industries with its exceptional durability and corrosion resistance. As a key material in construction, automotive and household applications, it offers unparalleled benefits. 

This article explores the production process, diverse applications and the top advantages of Galvalume steel coils, while highlighting how MRS Group enhances support for international importers with premium Vietnamese GL coils.

Explore the unmatched durability and benefits of galvalume steel coil for your industrial needs
Explore the unmatched durability and benefits of galvalume steel coil for your industrial needs

1. What is galvalume steel coil

Galvalume steel coil is a type of steel sheet that has been coated with an alloy consisting primarily of aluminum and zinc. This unique coating provides a high degree of corrosion resistance, making it an ideal material for a wide range of applications, especially in environments that are prone to rust and corrosion. The typical composition of Galvalume coating is 55% aluminum, 43.4% zinc, and 1.6% silicon, which together create a robust barrier against the elements.

2. Specification of Galvalume Steel Coil

T-bend

0T ~ 2T

Tensile strength

Min 270 MPa

Yield strength

Min 205 MPa

Coating mass

  • AZ 50 - 50g/m2

  • AZ70 - 70g/m2

  • AZ100 - 100g/m2

  • AZ150 - 150g/m2

  • AZ180 - 180g/m2

  • AZ200 - 200g/m2

Base metal thickness

0.15 ~ 2.0mm

Coil width

750 - 1250mm

Coil weight (MTS)

Max 25

Coil ID (mm)

508 (10), 610 (10)

Coil OD (mm)

9002000

 

Find out more: Important galvalume steel coil specifications that importer need to know

3. How is galvalume steel made

The production of Galvalume steel involves a sophisticated process that ensures the material’s superior durability and corrosion resistance. Here’s a detailed breakdown of each step in the manufacturing process:

Cleaning

Before the coating process begins, the cold-rolled steel sheets undergo thorough cleaning to remove any impurities, such as oil, dirt, and mill scale. This step is crucial to ensure that the coating adheres properly to the steel surface. The cleaning process typically involves alkaline cleaning, rinsing, and acid pickling.

Annealing

After cleaning, the steel sheets are heated in an annealing furnace. This step, known as annealing, alters the microstructure of the steel to make it more ductile and workable. During annealing, the steel is heated to a specific temperature and then slowly cooled, which relieves internal stresses and improves the steel’s mechanical properties.

Coating

The core of the Galvalume steel production process is the hot-dip coating. In this step, the cleaned and annealed steel sheets are passed through a molten bath containing the aluminum-zinc alloy. The composition of the bath is typically 55% aluminum, 43.4% zinc and 1.6% silicon. As the steel sheets exit the bath, they carry a layer of the molten alloy, which solidifies on cooling.

From cleaning to coating, discover the meticulous process behind the production of durable Galvalume steel
From cleaning to coating, discover the meticulous process behind the production of durable Galvalume steel

Post-Coating Treatment

Once the coating has solidified, the Galvalume steel sheets may undergo additional treatments to enhance their properties such as chromating, oiling,…

Quality Control

Throughout the production process, rigorous quality control measures are implemented to ensure that the Galvalume steel meets industry standards. These measures include coating thickness measurement, mechanical testing, corrosion testing,…

4. Learn about galvalume steel coil application

Galvalume steel coils are used in a variety of applications due to their exceptional durability and corrosion resistance. Some of the most common uses include:

  • Roofing and Siding: Ideal for residential, commercial, and industrial buildings due to its long-lasting protection against weather.

  • Automotive Industry: Used in the manufacturing of car parts to enhance durability and resistance to rust.

  • Appliances: Commonly found in household appliances such as refrigerators and washing machines.

  • Agricultural Equipment: Provides a durable and rust-resistant material for farming tools and structures.

Galvalume steel coil enhances automotive durability with superior rust resistance, perfect for long-lasting vehicle parts
Galvalume steel coil enhances automotive durability with superior rust resistance, perfect for long-lasting vehicle parts

5. Top benefits of galvalume steel coil

Galvalume steel coils offer numerous benefits that make them a preferred choice for various industries:

Corrosion Resistance

One of the primary benefits of Galvalume steel coils is its outstanding corrosion resistance. The aluminum-zinc coating provides a robust barrier against rust and corrosion, significantly extending the lifespan of the steel. This makes it ideal for applications in harsh environments where exposure to moisture and chemicals is common. Enhanced longevity is achieved as the alloy coating offers up to three times more corrosion resistance compared to galvanized steel, ensuring that structures and products maintain their integrity over time. Additionally, the minor scratches and damages to the coating can self-heal due to the sacrificial nature of zinc, which protects the exposed steel by corroding itself instead.

Heat Reflectivity

Galvalume steel coil has excellent heat reflectivity due to the aluminum content in its coating. This property makes it an energy-efficient material, particularly useful in building applications. Buildings with Galvalume steel roofs or siding reflect more sunlight, reducing heat absorption and lowering cooling costs, especially in hot climates. This thermal efficiency helps maintain cooler indoor temperatures, enhancing comfort and reducing the reliance on air conditioning systems.

Maximize durability and energy efficiency with Galvalume steel coil—offering top-tier corrosion resistance and heat reflectivity
Maximize durability and energy efficiency with Galvalume steel coil-offering top-tier corrosion resistance and heat reflectivity

Aesthetic Appeal

Galvalume steel has a smooth, shiny appearance that is aesthetically pleasing. This makes it a popular choice for architectural applications where both durability and appearance are important. It offers versatile finishes, as it can be painted or left in its natural finish, offering flexibility in design and enhancing the visual appeal of buildings and products. The sleek and modern appearance of Galvalume steel can significantly enhance the overall aesthetics of both residential and commercial structures.

Cost-Effectiveness

While the initial cost of Galvalume steel may be higher than some other materials, its long-term benefits make it a cost-effective solution. The superior corrosion resistance reduces the need for frequent maintenance and repairs, saving costs over the lifespan of the product. Its durable nature means fewer replacements and lower long-term expenses, providing excellent value for money, making it a smart investment for many applications.

Versatility

Galvalume steel coil is highly versatile, suitable for a wide range of applications across different industries. It can be used in a variety of applications, from roofing and siding to automotive and household appliances, making it a versatile choice for manufacturers and builders. The material’s formability allows it to be easily shaped and customized for specific needs and applications, adding to its appeal across various sectors.

Galvalume steel coil combines corrosion resistance, heat reflectivity, and aesthetic appeal, offering a versatile and cost-effective solution
Galvalume steel coil combines corrosion resistance, heat reflectivity, and aesthetic appeal, offering a versatile and cost-effective solution

Environmental Benefits

Galvalume steel is an environmentally friendly material that contributes to sustainability in several ways. One of its key environmental benefits is its recyclability. Galvalume steel is fully recyclable, reducing waste and conserving natural resources. It can be reprocessed and reused in the production of new steel products. Additionally, the heat reflectivity and thermal efficiency of Galvalume steel contribute to lower energy consumption in buildings, reducing the overall carbon footprint and supporting eco-friendly construction practices.

Strength and Durability

The combination of aluminum and zinc in the coating provides Galvalume steel with exceptional strength and durability. This ensures the material maintains its structural integrity even under extreme weather conditions, making it suitable for use in areas prone to severe weather. Moreover, Galvalume steel’s resistance to scratches and abrasions ensures that it remains functional and aesthetically pleasing for longer periods, providing reliable performance in demanding applications.

Lightweight

Despite its strength and durability, Galvalume steel coil is relatively lightweight compared to other materials. This makes it easier to handle and install, reducing labor costs and installation time. The lightweight nature of Galvalume steel also makes it more cost-effective to transport, further reducing overall project costs. Its combination of strength, durability, and lightweight characteristics makes it a practical choice for a wide range of applications.

6. MRS Steel enhances support for importers of Vietnamese Galvalume steel coils

At MRS, we are committed to supporting international importers with high-quality Vietnamese galvalume steel coils. Our extensive experience and dedication to quality ensure that our products meet the highest standards, providing our clients with the best materials for their projects. Here’s how we enhance support for importers:

  • Quality Assurance: Rigorous testing and quality control measures ensure that our Galvalume steel coils meet international standards.

  • Competitive Pricing: We offer competitive prices without compromising on quality, providing importers with cost-effective solutions.

  • Timely Delivery: Our efficient logistics network ensures that our products are delivered on time, every time.

  • Technical Support: Our team of experts is always available to provide technical support and answer any questions about our products.

  • Custom Solutions: We offer customized solutions to meet the specific needs of our clients, ensuring they get the exact product they require.

By choosing MRS, importers can be confident in the quality and reliability of their Galvalume steel coils, enabling them to unlock the full potential of this versatile material for their projects.

Galvalume steel coils stand out as a superior choice for various industrial applications due to their unique composition and outstanding properties. MRS is dedicated to offering top-quality Vietnamese Galvalume coils to international importers, ensuring reliable supply, competitive pricing and exceptional support. To receive the best quotes for Vietnamese galvalume steel coil, please contact MRS via Email: vanloc@mrssteel.com.vn or WhatsApp: +84 769 112 358 for 24/7 support.