As the terminal product of the steel products series, the work flow and additive factors of prepainted galvanized steel sheet is extremely complicated. So once you buy prepainted galvanized steel sheet, besides the thickness, width and colours , you ought to make sure the flowing factors.

1. Mechanical property of placodes . It refers to the yield strength, lastingness and ductility.

2. Performances of cladding materials. It refers to the kinds , coating adhesion and weights.

3. Property of coating. It refers to the coating types, film thickness, T bending property, impact, pencil thickness, chalking resistance, salt fog resistance and sturdiness .

4. Surface quality. It refers to defects, gloss, colour and fineness.

5. Other performances. It refers to the plate cut, dimensional accurancy and tolerance.

Different groups, like architect and designers, owners, and processors, have the various understandings of it. Durability is that the most vital performance of the colour coated steel. It means fastness, non-efflorescent and no rust within the guarantee period.