What are the cautions for the use of color coated steel plate?

Purification plate: flat surface, no scratches, sickle bend is not greater than 0.2% of the length of the steel plate, the color difference △E≤0.3.
Deep drawing plate: yield strength 140~260MPa、tensile strength 270~320MPa、elongation A80≥32, T bend ≤1T, scratch + cup process adhesion level 0, solvent wipe resistance ≥200 times.
Coil use for pipe plate: when coiling plate, it is easy to produce the phenomenon of Luddus belt. By eliminating the influence of the yielding platform to destroy the air mass, it completely eliminates the rounding problem.
Building materials plate: in addition to the choice of using high-grade anti-aging paint, color steel surface scratch resistance to ≥2400, pencil hardness 2H, T bend ≤3T is better.