PE

The PE-coated color-coated steel sheet is easy to be processed and formed because of its good adhesion, and the price is relatively cheap. But the other degree of UV resistance and chalking resistance is relatively low. PE color coated steel can be used for the roof of ordinary civil buildings.

SMP

SMP steel plate has better durability, and the cost is higher than the PE coating. Silicone is not as good as PE in terms of adhesion and processing formability to materials,

High Durable Polyester (HDP)

It is better than ordinary SMP coatings, and its outdoor weather resistance reaches 16 years. Its flexibility and weather resistance are higher.

chemical coated steel

PVC

PVC coating has nice anti-chemical and anti-water, and the coasting is relatively thick, which can well protect the substrate.

The PVC coating is rarely used because they pollute the environment.

1. coated steel substrate is uncoiled and welded and then goes through the inlet looper to be cleaned and pretreated continuously.

2. After pre-treatment, a layer of chemical conversion coating is formed on the surface.

3. Paint and dry the back and top sides of galvanized steel twice (namely twice-side twice-coating method). For some special uses, it may be painted and dried three times.

4. Cool down the coated steel.

5. After quality testing, the colour coating sheet will be coiled for sale.

That’s why there are several layers of pre-painted galvanized steel coils, including, base metal, zinc coating (two sides), chemical conversion coating (two sides), primer coating (two sides), and top/back coatings.