Galvalume Steel Coil Aluzinc Steel Coil
The galvalume steel coil or aluzinc steel coil is of cold-rolled steel sheet as a substrate and surface is coated by alloy which contains 55% aluminum, 43.4% zinc and 1.6% silicon. It combines the physical protection and high durability of aluminum and the electrochemical protection of zinc. It is also called aluzinc steel coil.
Advantage of galvalume steel coil aluzinc steel coil:
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Strong corrosion resistance, 3 times that of galvanized steel sheet.
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The density of alloy which contains 55% aluminum, 43.4% zinc and 1.6% silicon is smaller than the density of zinc. When the weight is same and the thickness of coating thickness is the same, the area of the galvalume steel sheet is 3 times or larger than galvanized steel sheet.
Galvalume steel coil aluzinc steel coil
| Product name | Galvalume steel coil aluzinc steel coil |
| Alu-Zinc Coating | 30-150g/m2 |
| Thickness | 0.16-0.8 mm |
| Width | 600-1250 mm |
| Coil ID | 508mm or 610mm, both are available. |
| Coil weight | 3-6 tons |
| Surface Structure | Regular spangle |
| Surface Treatment | Anti-Finger print,Chromated, oiled or non-oiled, dry. |
| Package | standard export package (Detailed picture is as follows) |
Surface anti finger print, several different colors are available.
Coating Layer of galvalume steel coil aluzinc steel coil
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Anti-Finger print,Chromated, Oiled/ non-oiled
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Alu-Zinc Plating Layer
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Cold Rolled Steel Sheet
What is galvalume steel coil aluzinc steel coil
Galvalume steel coil is of cold rolled steel as substrate and surface is coated with alloy (which contains 55% Al, 43.4% Zn and 1.6% Si).
Features of galvalume steel coil aluzinc steel coil
(1) Thermal Reflection:
People use it as material for heat-insulation for its thermal reflectivity as high as twice the galvanized steel sheet.
(2) Heat-resistance:
The aluzinc steel sheet could bear above 300℃ high temperature with its good performance in heat-resistance, quite similar to the aluminized steel sheet’s performance in oxidation-resistance under high temperature. It is often used for chimney pipe, oven, illominator, and fluorescent lamp cover.
(3) Corrosive-resistance performance:
The essential of galvalume steel coil’s corrosive-resistance lies at aluminium’s protective property. Once the zinc come under abrasion, the aluminium would form a layer of densified oxidized aluminium, preventing the interior from further corrosion.
(4) Economical:
The density of 55%AL-Zn is smaller than Zn, therefore, with the same weight and thickness of coating, the galvalume steel sheet is 3% larger in area than that of galvanized steel sheet.
(5) Easily painted:
There is perfect adhesiveness between galvalume sheet and paint, saving the process of pre-treatment and weathering for painting work.
The coating material on the galvalume steel sheet is outstanding in its adhesiveness, which could be directly tarring on the advertising board and commonly used board with no pre-treatment such as weathering process.
The difference between galvanized steel coil and galvalume steel coil:
The primary difference lies at its coating layer. For the galvanized sheet, a layer of zinc material is averagely distributed on the surface of galvanized sheet, playing as a positive sheet protective to the base metal, in another word, zinc works as substitute for corrosive-proof protecting the base metal until it is torn off.
While the galvalume sheet’s surface is a coating layer consisting of 55% aluminium, 43.5% zinc and other few elements, which appears a honeycomb structure under microscopic observation. Aluminium honeycomb wraps the zinc.Under such circustances, even though the coating of galvalume also plays its protective role as positive sheet, however, such protection decrease sharply due to declining content of zinc and no easily electrolysis when zinc wrapped by aluminium.
Therefore, once the galvalume sheet is cut open, the verge of cut would be generally losing its protector and quickly go rusting. So we should cut as less as possible, once cutting happen, use anti-rusting paint or zinc-rich paint for protecting the verge, extending its lifespan.
Shipment of galvalume steel coil aluzinc steel coil
Both bulk and container shipment are available.
FAQ
Minimum order quantity?
Each size, 50 tons (in 2 containers).
Delivery?
About 20 to 30 days.
Payment?
T/T, L/C, etc.
Business condition?
CIF, CFR, FOB, all are ok.
How to contact?
The manager: Mr. Philip Zhao
E-mail: philip126@hotmailcom
Whatsapp: 0086 150 6875 8855
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