Galvalume Steel

Your Professional Galvalume Steel Supplier

Our goal is to become your true partner in the field of galvalume steel in China. Gnee Steel Group is committed to becoming the world's most internationally competitive supply chain group, meeting the different needs of different customers. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

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Why Choose Us

Our services:

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Our certification:

Our company has obtained SGS certification. We have also passed ISO9001 and ISO14001 environmental management system certification.

Our capacity:

We have established long-term cooperative relationships with dozens of factories to ensure the production of our products, and our annual export volume exceeds 80,000 tons.

Quality control:

All our products are made of the highest quality materials and are subject to factory inspection, cargo inspection at any time.

Advantages of Galvalume Steel

Exceptional durability: With its aluminum-zinc coating, galvalume steel withstands harsh conditions, ensuring long-lasting performance.

Enhanced corrosion resistance: The coating provides superior protection against rust, reducing maintenance needs and lifecycle costs.

Aesthetic appeal: Available in pre-painted and acrylic-coated finishes, galvalume steel offers both visual appeal and weather resistance.

Versatility: Lightweight yet strong, galvalume steel suits various applications, from roofing to automotive components.

Sustainability: Made from recycled materials and fully recyclable, galvalume steel minimizes environmental impact.

Cost-effectiveness: Its durability and low maintenance save costs over time, making it an economical choice for long-term projects.

Specification of Galvalume Steel

Specifications	Thickness 0.1-5mm, width 600-1500,or according to requirements
Standard	ASTM, JIS, DIN, GB,
Material	SGCC/Cgccdx51d+Z,--,Dx54D+Z,S220gd+Z,Dx51d+Z
Test	Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, , X-ray Test.
Product certification	ISO,SGS,BV,TUV,
Processing Service	Welding, Drilling, Cutting, Bending,Stamping,Embossing

Types of Galvalume Steel

Galvalume steel coil:

Galvalume steel coil is a continuous roll of galvalume-coated steel that is used as the base material for producing a wide range of products, including panels, sheets, and structural components. Galvalume coils are popular for manufacturing applications that require large volumes of metal, as they can be easily processed into various sizes and shapes.

Galvalume steel sheet:

Galvalume steel sheet refers to flat sheets of metal that have been coated with the galvalume alloy. These sheets are available in various gauges (thicknesses) and are widely used in construction, especially for roofing and siding.

Bare galvalume sheet:

Bare galvalume sheets are simply galvalume steel sheets without any additional coatings or paint applied to them. While the galvalume coating provides corrosion resistance, some projects May require an additional finish, such as paint or a protective film, depending on the specific needs of the application.

Application of Galvalume Steel

Industrial application:

Galvalume steel is often used in industrial production to make key components that are resistant to corrosion. This is reflected in storage tanks and pipelines that are exposed to humid and corrosive environments.

Construction industry:

Galvalume steel is a popular material for metal roofs and facades. The high aluminum content brings a significant reduction in heat load inside the building, while the luster of the metal echoes the modern architectural design, presenting a different style.

Home appliance manufacturing:

Although appearance is the visual basis for consumers to make choices, service life is the key. The use of galvanized steel for the outer casing not only ensures the appearance, but also greatly improves the service life of the appliance.

AZ50 Zinc Coated Galvalume Steel Coil Aluzinc Metal GL Steel Roll

The Manufacturing Process Of Galvalume Steel

Raw material preparation:

When producing galvalume steel, the base plate is usually cold-rolled steel, but differences in chemical composition and thickness not only determine the performance of the product, but also relate to production efficiency and production costs.

Hot-dip aluminum-zinc coating process:

This is the most critical step in the production of galvanized steel, and it affects the quality of the final product.

Preparation before hot-dip aluminizing:

Before producing galvanized steel coils, thorough cleaning and pickling is also carried out to further remove surface oxide layers, oil stains and other impurities, thereby improving the adhesion of the galvanized coating.

Immersion and coating formation:

The coil is passed through the molten zinc-aluminum bath at a constant speed, which ensures that the entire coil is in full contact, so that there are no bubbles or uneven coatings.

Cooling method:

After the coils are lifted out of the aluminum-zinc bath, they enter the cooling zone. Water mist spray and cooling fans are used to quickly reduce the temperature of the steel and prevent softening and deformation of the alloy layer.

Quality Control of Galvalume Steel

01/

Thickness measurement: Usually non-destructive testing methods such as X-ray inspection are used to ensure that the coating is evenly distributed on the surface of the steel coil.

02/

Visual inspection: Quality inspectors will visually inspect the surface of the galvanized steel coil to ensure that there are no surface defects, bubbles, cracks or other quality issues.

03/

Salt spray test: Evaluate the corrosion resistance of aluminum-zinc plated steels and simulate the ability of aluminum-zinc plated steels to maintain long-term protection in marine climates or industrial pollution.

04/

Environmental simulation test: In addition to the salt spray test, a simulated high-temperature, high-humidity environment will be added to further test the durability in extreme environments.

05/

Coating adhesion test: In order to ensure that the zinc-aluminum coating will not come off during subsequent processing and long-term use, tensile tests and coating peeling tests are generally used.

06/

Antioxidant test: The anti-oxidation test is used to confirm that galvanized steel does not oxidize in the air.

Packing and Shipping of Galvalume Steel

Packing	Standard export packing (inside:water proof paper,outside:steel covered with strips and pallets)
Shipping	Shipped by road, sea, rail

Other Service of Galvalume Steel

Delivery time	7 to 15 working days
Payment terms	30%TT for deposit, 70% balance before shipment or LC at sight
Supply ablitity	10000 Ton/ per Month

FAQ

Q: What is galvalume steel?

A: Galvalume steel is a type of steel sheet coated with a protective alloy of 55% aluminum, 43.4% zinc, and 1.6% silicon, offering superior corrosion resistance compared to galvanized steel.

Q: What is the difference between galvalume and galvanized steel?

A: Galvalume and galvanized steel both offer corrosion protection, but Galvalume, with its zinc, aluminum, and silicon coating, provides superior long-term corrosion resistance and durability compared to galvanized steel's zinc coating, though galvanized is more cost-effective.

Q: How do you identify a Galvalume?

A: Essentially, it is a thin steel sheet, protected not with pure zinc, but with an alloy containing 55.0% of aluminum, 43.4% of zinc and 1.6% silicon. Galvalume looks quite similar to galvanized steel; however, after closer look one will notice that the surface looks more regular.

Q: How thick is Galvalume steel?

A: In standing seam metal roofing, the most common thickness of Galvalume is 24-gauge, but anywhere from 22 to 29-gauge material is standard. Galvalume is sometimes referred to by its coating weights, AZ-50 and AZ-55.

Q: Is Galvalume shiny?

A: Galvalume roofing is the least expensive metal panel, but it's often too shiny for residential applications. Unpainted galvalume is normally used for commercial and agricultural applications.

Q: How do you make Galvalume rust?

A: Submerge the product in vinegar. If the piece to be dulled is too large to be submerged, put the vinegar in a spray bottle, or soak paper towels in vinegar and lay them on the galvanized metal. If using the paper towel method, make sure to replace the vinegar as it dries to get the desired effect.

Q: Is Galvalume cheaper than painted metal?

A: Generally, Galvalume metal roofing is a more affordable option than painted metal roofing, offering a cost-effective solution for homeowners seeking durable and weather-resistant roofing materials.

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional galvalume steel manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale galvalume steel at competitive price from our factory. Contact us for customized service. AZ150 Galvalume Cold Rolled Sheet Coil, Aluzinc Metal GL Steel Roll, Zinc alum Steel Coil