It is the black iron that was treated at normal temperature. It ranges between 0.35 mm and 3 mm, and it is used in seeral industries like cars and metal furniture. It is characterized by the thinness of its surface. It is covered by a layer of oil and is black.
Hot rolled steel coils and sheets
It is the black iron that was treated at a high temperature. It ranges between 1 mm and 18 mm, and it is used in seeral industries like iron structures and tanks. It is blue.
Coils and sheets of painted steel that are galvanized and perpainted
Galvanized steel is the black metal that is coated with a layer of zinc to be able to have resistance to rust caused by atmospheric effects, and it makes it look good (nice luster) Perpainted steelis the black metal that is coated with a layer of zinc then was painted with different colours to increase its capacity to resist rust.