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NEW FROM ESBS STEEL
2022-02-21
NEW FROM ESBS STEEL
When your want to purchase the ppgi ppgl coils ,we can confirm from below poins:
You need to consider when choosing a primer (prepainted galvanized steel coil)
1) adhesion of primer and finish coatin
a
For the ppgi ppgl coils back coating, if the color-coated steel sheet is a Single layer, Color coated steel with a back primer plus a back finish coating was selected.
The primer is of the same variety as the front, and a layer of light color (such as white) polyester is selected for the finish coating.
If the PPGI PPGL steel coil is used as a sandwich panel, a layer of epoxy resin with excellent adhesion and corrosion resistance is sufficient.
3:Coating Color Selection
The choice of coating color mainly considers the use of environment and market demand. The light color paint has a strong heat reflection ability, and the contrast between the coating and the original color is small, and the appearance is small. Dark colors will fade easily when exposed to ultraviolet light.
Different colors have different reflectivity to sunlight. The following table lists the reflectivity of different colors.
Also, there are 2 misunderstandings:
First, there are a large number of white primers. The purpose of using a white primer is to reduce the thickness of the finish coating so that the corrosion resistance becomes poor, and the 10micron finish coating is also very thin. Corrosion may occur in places such as cuts and bends within two years.
Second, color-coated steel plates for construction from different manufacturers and different batches in the same project. The colors seem to be the same during construction, but after several years of sunlight, serious color differences may occur. Even if the color coated steel from the same supplier, it is recommended to order the same project at one time.
