The material requirements of building (roof and exterior wall panels) can be divided into safety performance (earthquake resistance, wind resistance, fire resistance), residential performance (waterproof, heat insulation, sound insulation), durability
(pollution resistance, weather resistance, beauty), production and processing (economy, easy processing, easy maintenance).
Safety and service life are critical to the ultimate owner of the building. For design units, service life, bearing capacity, appearance and so on are more important. For building wall and roof forming processors, machinability (surface hardness, wear resistance, shape and steel plate strength) of color coated panels is the preferred requirement.
Of course, the quality of color coated sheet mainly depends on the manufacturer of color coated sheet, but if the processing and installation equipment and methods are inappropriate, the appearance and service life of the final product will be damaged to varying degrees.
[What are the performance indicators of color coated sheets?
Substrate: Yield Strength, Tensile Strength, Elongation
Coating: Coating weight, adhesion
Coating: color difference, gloss, T bending, impact, hardness, powder resistance, moisture and heat resistance.
Surface: Surface defects visible to the naked eye, etc.
Flatness: Tolerance, Inequality