?1. Economical
Since the density of 55% of AL-Zn is smaller than the density of Zn, the
wholesale GL steel sheet is larger than the area of ??the plated steel sheet by 3% or more in the case where the weight is the same as that of the gold-plated layer.
2. Easy to paint
Excellent adhesion between GL steel sheet and paint, lacquered without pretreatment and weathering. The coating of the gold-plated zinc-plated steel plate has excellent adhesion, so it can be directly coated on the advertising board and the general board without pre-treatment such as Weathering.
3. Corrosion resistance:
The corrosion resistance of GL steel sheets is mainly due to the protective function of aluminum and aluminum. When the zinc is worn, the aluminum forms a layer of dense alumina that prevents the corrosion-resistant material from further corroding the interior.
