Building Material 0.13-0.6mm G550 Cold Rolled Steel Coil Galvalume Steel Coil
| Thickness | 0.13-0.60mm |
| Width | 750-1250mm |
| AZ Coating | 30-250gsm |
| Coil ID | 508mm/610mm |
| Material | SGCC/CGCC/Tdc51dzm/Tdc52dts350gd/Ts550gd/Dx51d |
| Hardness | Soft hard(60),medium hard(HRB60-85),full hard(HRB85-95) |
| Surface Structure | Regular spangle, Minimum spangle, Big spangle, Zero spangle |
| Composition | AL55%, ZN43%, SI 2% |
| Corrosion resistance | the life of GL is 2-5 times longer than GI |
| Heat resistance | withstand high temperature 500-600ºC |
| Heat-reflective | the high reflection making it becomes an effective barrier against heat |
| Application | Be used outside directly or base material of PPGL, roofing, Builfing&Construction |
The corrosion resistance of 55% aluminum-zinc alloy steel sheet benefits from the protective function of the passivation layer of aluminum and the sacrificial protective function of zinc. When zinc is used for sacrificial protection on trimming, scratches and coating scratches, aluminum will form an insoluble oxide layer on the outside of the steel plate to play a barrier protection function.
The weight of the coating is the most important guarantee for corrosion resistance. The greater the thickness of the coating, the better the corrosion resistance.
Hot dipped galvanized steel coil, the thin steel plate is immersed in the molten zinc tank, so that a thin steel plate with a
layer of zinc is adhered to the surface. At present, the continuous galvanizing process is mainly used for production, that is,
the rolled steel sheet is continuously immersed in a galvanized bath with molten zinc to make a galvanized steel sheet;
alloyed galvanized steel sheet. This kind of steel plate is also manufactured by hot dipping method, but immediately after
leaving the tank, it is heated to about 500°C to form an alloy film of zinc and iron. This galvanized coil has good paint
adhesion and weldability.
Galvanized steel coils are widely used in construction, communications, electricity, transportation, energy, automobiles,
light industry (household appliances), agriculture, animal husbandry and fishery, petrochemical and other industries.
For galvanized coils, the thin steel plate is immersed in the molten zinc tank, so that a thin steel plate with a layer of zinc is adhered to the surface. It is mainly produced by continuous galvanizing process, that is, the coiled steel sheet is continuously immersed in a galvanized bath with molten zinc to make galvanized steel sheet; alloyed galvanized steel sheet. This kind of steel plate is also manufactured by hot dipping method, but immediately after leaving the tank, it is heated to about 500°C to form an alloy film of zinc and iron. This galvanized coil has good paint adhesion and weldability.
(1) Normal spangle coating
In the normal solidification process of the zinc layer, zinc grains grow freely to form a coating with obvious spangle morphology.
(2) Minimized spangle coating
During the solidification of the zinc layer, the zinc crystal grains are artificially restricted to form the smallest possible spangle coating.
(3) Spangle-free coating spangle-free
It is obtained by adjusting the chemical composition of the plating solution, does not have a visible spangle morphology, and has a uniform surface coating.
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Building Material Galvalume Steel Coil 0.13-0.6mm G550 Hot Rolled Steel Coil Images
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