Colour coating is a term used to describe the application of a decorative and/or protective organic coating to steel substrate supplied in coil form. Colour coated steel is also called as pre-painted steel.
Color Coated Steel Coil Processing
Nowadays, the application range of color coated steel coils is very wide, and they are very popular with people.
Color steel coils use high-quality substrates, no matter which paint process is selected, the technical standards for substrates are getting higher and higher.
Most steel-based color steel coils require leveling spangles, zero-spangle hot-dip galvanized steel coils or phosphating steel coils.
In recent years, it has been upgraded to use hot-dip galvanized aluminum, aluminum-zinc and other aluminum alloy coated thick steel plates as substrates.
The development trend of the glass film color steel coil is cold rolled as the substrate, and some high-end products also use stainless steel as the substrate. No matter which kind of substrate is selected, there are very high requirements for its surface layer, plate type and specification accuracy.
Regarding the missing coating of color steel coils, is caused by the substrate swimming, deformation, air oxidation and so on.
