Galvalume/Aluzinc Roofing Sheet (GL)

Galvalume corrugated steel sheetis an important alloy material often used in daily life. The Galvalume steel plateis composed of an Al Zn alloy structure, which consists of 55% Al, 43% Zn, and 2% Si solidified at 600 ℃. The whole structure is composed of Al Fe Si Zn, forming a dense quaternary crystal.

Types Of Galvalume/Aluzinc Roofing Sheet (GL)

Customized GL (AZ30-AZ275)

As one of the industry-leading color coated steel plate suppliers, we offer you the customed service of our galvanised steel coilraged from GL AZ30 to AZ275, incluing the popular product az150 galvalume. Our ga...

Specifications of the Galvalume/Aluzinc Roofing Sheet (GL)

Standard	ASTM, JIS, EN, BS, DIN
Thickness
Width	610mm-1500mm or according to customer's special request
Tolerance	Thickness: ±0.03mm
	Length:±50mm
	Width: ±50mm
Zinc coating	30g-275g
Material grade	SPCC、SPCD、08F、08AL、Q195、Q215、ST12、08YU etc.
Certificate	ISO, CE
Surface treatment	Chromated unoiled, galvalume

Application of galvalumealuzinc corrugated sheet(GL)

The aluminized zinc alloy roofing sheetis widely used in many areas. We can provide you with customized GL according to your needs.

Architecture: roof (corrugated galvalumeroofing), wall, garage, sound insulation wall, pipe, combined house, etc.

Automobile: muffler, exhaust pipe, wiper accessories, fuel tank, truck box, etc.

Home appliances: refrigerator backboard, gas stove, air conditioner, electronic microwave oven, LCD frame, CRT explosion-proof belt, LED backlight, electric cabinet, etc. agricultural: piggery, chicken house, granary, greenhouse pipes, etc.

Others: heat insulation cover, heat exchanger, dryer, water heater, etc.

Difference Between The Galvanized Sheet And Aluminized Zinc Sheet:

The difference between zinc roofing material galvalume steel sheets mainly lies in the difference in the coating. A layer of zinc material is evenly distributed on the surface of galvanized sheet, which plays the role of anode protection for the base metal. In other words, the alternative corrosion of zinc material protects the use of base metal. Only when the zinc is completely corroded can the base metal be damaged.

The surface coating of aluminized zinc plate is composed of 55% aluminum, 43.5% zinc, and a small number of other elements. The surface of aluminized zinc coating is a honeycomb structure in microcosmic, and the "honeycomb" composed of aluminum contains zinc. In this case, although the aluminized zinc coating also plays the role of anode protection, on the one hand, due to the reduction of zinc content, on the other hand, because the zinc material is wrapped by aluminum, it is not easy to electrolysis The function of this anode protection is greatly reduced, so once the aluminized zinc plate is cut, it will rust quickly when the cut edge is basically lost. Therefore, the aluminized zinc plate should be cut as little as possible. Once the edge is protected by antirust paint or zinc-rich paint after cutting, the service life of the plate can be extended [1].

Advantages of Galvalume/Aluzinc Roofing Sheet (GL)

Aluminum zinc alloy steel plate has a good heat resistance and can withstand the high temperature of more than 300 degrees of food intake. Its high-temperature oxidation resistance is very similar to that of aluminum plated steel plate. It is often used in chimneys, ovens, illuminators, and lampshades.

The corrosion resistance of the galvaume corrugated metal is mainly due to the protection function of aluminum. When zinc is worn, aluminum forms a dense layer of alumina, which prevents corrosion-resistant materials from further corroding the interior.

The thermal reflectance of the Al Zn coated steel sheet is twice as high as that of galvanized steel coil. It is often used as thermal insulation material.

Because the density of 55% Al Zn is smaller than that of Zn, the area of the Al Zn plated steel plate is more than 3% larger than that of Zn plated steel plate under the same weight and the same thickness of gold plating layer.

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