How To Choose Ppgl Sheet According To The Environment?

Regarding the selection of ppgl sheet, choose the aluminum-zinc coating substrate relative to the pickling environment, and choose the zinc-coated substrate relative to the alkaline environment; in high temperature and high humidity areas), it is necessary to use galvanized or aluminum coated with a relatively thick coating thickness. Zinc base. The specific indicators are: the weight of the zinc layer ≥ 140g/m2, the weight of the aluminum-zinc layer ≥ 100g/m2;

In coastal areas, due to the factor of chloride ions, the requirements for ppgl sheet require a relatively high thickness of the coating of ppgl sheet to prevent nicks or under-film corrosion; in areas with strong sunlight or ultraviolet rays (west or high altitude areas) ), fluorocarbon or high weather-resistant polyester should be selected for ppgl sheet coating with good durability;

pre painted galvalume steel

For public buildings and civil buildings, both corrosion resistance and appearance performance must be considered. Therefore, PVDF or HDP with a finer coating of ppgl sheet is a good choice; when the color can be selected, ppgl sheet with lighter color is selected from the corrosion point of view, which has stronger durability;

The outdoor ppgl sheet should use medium and low gloss paint; the roof with small slope directly adopts aluminum-zinc light plate, which is economical and practical; the choice of steel grade is related to the type and thickness of the steel plate. Using high-strength steel can reduce the thickness of the ppgl sheet under the same load, or using a relatively shallow type of steel plate can reduce material usage.