Galvalume steel coil is a steel coil with an aluminum-zinc alloy structure consisting of 55% aluminum, 43% zinc and 2% silicon. It has good corrosion resistance, heat resistance, electrical conductivity and processing performance. Galvalume steel coil can be used as building exterior panels, or it can be coated with organic coatings to make color-coated coils.

 

Galvalume steel Coils

 

{Livestock Neck Tags} is a steel coil with an aluminum-zinc alloy structure consisting of 55% aluminum, 43% zinc and 2% silicon. It has good corrosion resistance, heat resistance, electrical conductivity and processing performance. Galvalume steel coil can be used as building exterior panels, or it can be coated with organic coatings to make color-coated coils. The life of galvalume steel coil can reach 25 years, but the edges after cutting are prone to rust and need to be protected by anti-rust paint or zinc-rich paint.

 

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Galvalume coils Features:

 

1. Heat reflectivity:

 

The heat reflectivity of aluminum-zinc steel sheet is very high, twice that of galvanized steel sheet, and people often use it as a heat-insulating material.

 

2. Heat resistance:

 

Aluminum-zinc alloy steel sheet has good heat resistance and can withstand high temperatures of more than 300 degrees Celsius. It is very similar to the high-temperature oxidation resistance of aluminum-plated steel sheet and is often used in chimney pipes, ovens, lighting fixtures and fluorescent lampshades. Corrosion resistance:

 

The corrosion resistance of aluminum-zinc steel coils is mainly due to aluminum and its protective function. When zinc is worn, aluminum forms a dense layer of aluminum oxide to prevent corrosion-resistant substances from further corroding the interior.

 

3. Economic efficiency:

 

Because the density of 55%AL-Zn is lower than that of Zn, the area of aluminum-zinc steel sheet is more than 3% larger than that of galvanized steel sheet under the same weight and the same thickness of the gold-plated layer.

 

4. Easy to paint

 

Aluminum-zinc steel sheet has excellent adhesion to paint and can be painted without pretreatment and weathering.

 

The paint adhesion of the gold-plated layer of the galvanized steel plate is relatively good, so it can be directly coated on advertising boards and general boards without pre-treatment such as weathering.

 

5. The galvanized steel plate has a gorgeous silver-white surface.

 

 

Galvalume steel sheets / coils

 

Common specifications: 

 

Width:600 -1500mm

 

Thickness: 0.15-2.0mm

 

Roll weight: 4 -6tons

 

Inner diameter: 508mm or 610mm

 

Alu-zinc coating: AZ40 - AZ150g/m²

 

Material: SGCC-AZ, DX51D-AZ, DC51D-AZ

 

 

Application of Aluminum steel coils

 

Buildings: roofs, walls, garages, soundproof walls, pipes and modular houses, etc.

 

Automobiles: mufflers, exhaust pipes, wiper accessories, fuel tanks, truck boxes, etc.

 

Home appliances: refrigerator back panels, gas stoves, air conditioners, electronic microwave ovens, LCD frames, CRT explosion-proof belts, LED backlights, electrical cabinets, etc.

 

Agriculture: piggeries, chicken houses, granaries, greenhouse pipes, etc.

 

Others: thermal insulation covers, heat exchangers, dryers, water heaters, etc.

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The difference between galvanized sheet and galvanized sheet

 

The difference between galvanized sheet and galvanized sheet mainly lies in the difference in coating. A layer of zinc material is evenly distributed on the surface of galvanized sheet, which plays the role of anodic protection for the parent material. That is to say, the alternative corrosion of zinc material protects the use of the parent material. Only when the zinc is completely corroded can the parent material inside be damaged.

 

The surface coating of galvanized sheet is composed of 55% aluminum, 43.5% zinc and a small amount of other elements. Under the microscopic level, the surface of galvanized coating is a honeycomb structure, and the "honeycomb" composed of aluminum contains zinc. In this case, although the galvanized coating also plays the role of anodic protection, on the one hand, due to the reduction of zinc content, on the other hand, due to the fact that zinc material is wrapped by aluminum and is not easy to electrolyze, the role of anodic protection is greatly reduced. Therefore, once the galvanized sheet is cut, it will quickly rust when the cut edge basically loses protection. Therefore, the galvanized sheet should be cut as little as possible. Once cut, anti-rust paint or zinc-rich paint should be used to protect the edge to extend the service life of the sheet.