Galvalume Steel Coil

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Galvalume Steel Coil

There is oxidative corrosion after steel plate is exposed to moisture so corrosion protection layer should be added on the surface. The commonly used layers are galvanized layer and Al-Zn alloy which is composed of 53% aluminum, 43.5% zinc and 1.5% silicon. For comparison of these two layers, Al-Zn alloy has stronger anti-corrosion ability. The reason for that is aluminum can become a dense layer of alumina when zinc are subject to wear in quaternary alloy crystal layer, thus preventing corrosive substances further corroding the internal. As indicated in data, the anti-corrosion ability for this product is 4 times of galvanized layer with the same thickness.

There are many features of galvalume steel coil. In the first place, this product has good heat resistance so it can withstand high temperature over 300℃. Similar with aluminized steel, it can be used in chimney pipe, oven, fluorescent lamp cover and illuminator, etc. In the second place, this product has high heat reflectivity which is 2 times of galvanized product so it is also used as insulation material. In addition to that, this product has 3% larger surface area than galvanized product under same weight and same thickness layer for the reason that the density of AL-Zn alloy is smaller than Zn. Last but not least, galvalume steel coil has excellent adhesion for paint so pretreatment and weathering process are not necessary for painting.

In summary, galvalume steel coil can be used for general, mechanical occlusion and deep drawing. To be more specific, this product can be used in roof, wall, garage, soundproof wall, pipe, modular housing, muffler, exhaust pipe, wiper accessories, fuel tank, truck box refrigerator backplane, gas stove, air conditioner, microwave oven, LCD border, CRT explosion-proof belt, LED backlight, electrical cabinet, pig coop, chicken coop, granary, pipe of greenhouse in construction, automobile, domestic appliance and agriculture. In addition to that, galvalume steel coil can also be used in heat insulation cover, heat exchanger, dryer and calorifier.

Detailed Specifications
Standard: GB/T2518, ASTM A792, JISG3312
Width: 400-1500mm
Wall thickness: 0.15-2.0mm
Weight of Zinc-coating (g/m2): 60-150
Material: SGCC(DX51D)/SGCD(DX52D)/SGCE(DX53D)/SGCF(DX54D)
S220GD+Z/S250GD+Z/S280GD+Z/G320GD+Z/S350GD+Z/S500GD+Z/G550GC+Z

We are an experienced galvalume steel coil supplier in China. We offer a wide range of products, including galvanized steel coil, square and rectangular hollow section, API 5L line pipe, studs, and more.

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