The substrate composition of the Galvalume steel Coil sheet is composed of an alloy coating of 55% aluminum, 43.5% zinc and 1.5% silicon, which combines the physical protection of aluminum and the high durability and the electro-chemical protection of zinc. Under the same conditions, its corrosion resistance is 4-6 times that of galvanized steel, and it is an ideal material for roofs and exterior walls.
Specifications:
Thickness(mm) | 0.1mm—1.0mm |
Width(mm) | up to 1250mm |
Weight | 3-5 T |
Zinc Coating Weight(g/m2) | 20-275g/㎡ |
Inner Diameter(mm) | 508mm/610mm |
Material | Galvanized Steel |
Surface Treatment | Chromed/Dry/Oil or Unoil |

Applications
Due to its versatility and durability, galvalume steel coil is widely used in:
- Roofing sheets and wall panels (especially in industrial and commercial buildings)
- Agricultural structures such as barns and grain silos
- Air ducts and HVAC systems
- Fencing and garage doors
- Appliances and automotive parts
Factory Environment and Inventory
Shelter is a trusted Galvalume steel coil manufacturer and supplier in China, offering consistent quality, competitive factory prices, and fast global delivery. With advanced production lines and strict quality control, we ensure reliable performance for your roofing, construction, and industrial needs.



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