Cold Rolled Steel Coil
Color rolled steel coil—— the substrate for Pre Painted Galvanized Steel Coil. With a smooth and beautiful appearance of cold-rolled steel coil. But any minor scratches in the surface coating will expose the cold-rolled substrate to the air, quickly exposing the iron to generate rust. Therefore, it can only use for temporary isolation measures and interior materials with low requirements.
Hot Dipped Galvanized Steel Coil
Hot-dip galvanized color-coated sheet has the protective effect of zinc. However, the surface’s organic coating can also be insulation and protection, preventing rust, and the service life is longer than that of hot-dipped galvanized sheets.
Galvalume steel coil
The composition of galvalume steel coil is 53% aluminum, 43.5% zinc, and 1.5% silicon, named 55% Al-Zn. According to the data, the comprehensive anti-corrosion ability of 55% aluzinc is four times that of galvanized with the same thickness.