Steel sheets are divided into two categories: cold rolled sheet and hot rolled sheet. In general steel sheets are produced in the following types:
Oil sheets are stretchable and therefore, in the cold rolling process, under pressure and tension, they become wider. The thickness of oil sheets is between 0.30 to 3 mm and is marketed in two widths of 100 and 125; The width of 100 is known as short width and the width of 125 is known as long width.
These sheets are divided into three categories, which are:
This type of sheet is produced from hot rolling of ingots, billets and iron pellets with direct heat of fire and according to the amount of carbon used, it is labelled ST33 through ST52. These sheets are available in thicknesses of 1.5 to 15 mm and in two modes of roll and fabric sheet. These sheets are cut in different dimensions:
These sheets are actually the same oil sheets that are coated with a layer of zinc metal, and the higher the amount of metal on it, the higher the curing and corrosion resistance of the sheet. The thickness of zinc coating is usually between 100 and 350 microns.
Galvanized sheets are produced and supplied 0.18 to 6 mm thick, which are mainly marketed in rolls. The weight of the rolls depends on the thickness of the sheet and is between 5 and 7 tons. These sheets can be used in the automotive industry, agriculture, roof racks, construction of tanks and storage barrels, etc.
These sheets are painted in special Furnaces. Their thickness is 0.2 to 0.7 mm. The thickness of the paint layer on the surface is 20 to 25 microns and on the back is 7 to 15 microns. These sheets are produced and supplied in 16 international standard colors. Colored sheets are often used in a variety of roofs, sheds and interior and exterior designs of the buildings. Therefore these sheets have the forms of shutters, chandeliers, pottery, crescent, sine, trapezoid and gable.
These sheets are produced in hot air. Hydrochloric acid is used to remove grease and surface impurities and to make the surface shiny and smooth. The thickness of acid-washed sheets is 1.5 to 6 mm and they are offered in two types: rolls and sheets. The sheets are anti-wear and hard, so they are used in the car industry, chassis production, and ship construction.
These sheets are obtained by adding a layer of tin to the low carbon and soft ST12 sheets. Their thickness is 0.16 to 0.45 mm. These sheets are for uses that should be free from spoilage, such as cans, food and vegetable oils. The zinc coating on the inner layers of this can is more than the outer layers.
These sheets are divided into the following categories:
To package steel sheets, bundles are used.
The following information is attached to the bundles: