Color Coated PPGL Steel Coil Used for Steel Building

Jan 20, 2021 · The first prerequisite for color steel coils to produce aging or photochemical reactions is that the surface components of color steel coils can digest and absorb radiation; secondly, when the radiation energy absorbed by molecular structure digestion exceeds the bond energy of molecular structure, the coating of color steel coils can be dissolved.

Jan 20, 2021 · The first prerequisite for color steel coils to produce aging or photochemical reactions is that the surface components of color steel coils can digest and absorb radiation; secondly, when the radiation energy absorbed by molecular structure digestion exceeds the bond energy of molecular structure, the coating of color steel coils can be dissolved.