Cold-rolled plate is made of ordinary carbon steel hot rolled strip, after further cold rolled steel plate having a thickness of less than 4mm. Since rolling at room temperature, does not produce iron skin, therefore, the cold plate surface quality, dimensional accuracy, coupled with the annealing treatment, the mechanical properties and process performance are better than hot rolled steel sheet, in many areas, especially in the appliance manufacturing, it has been gradually replaced with hot rolled steel sheet. Cold rolled Common Specifications: thickness 0.2-4mm, width 600-2000mm, length 1000-6000mm. Cold-rolled plates commonly used grades: Q195A-Q235A, Q195AF-Q235AF, Q295A (B)-Q345 A (B); SPCC, SPCD, SPCE, ST12-15; DC01-06. Cold-rolled plate performance: The main use of low carbon steel grades, requires a good cold bending and welding properties, as well as some stamping performance. Cold-rolled strip is widely used, such as automobile manufacturing. Cold rolled steel sheet is ordinary carbon steel cold rolled sheet for short, also known as cold-rolled plate, commonly known as cold, sometimes mistakenly written as cold rolling plate. Cold-rolled plate with good performance, cold-rolled plate surface clean and bright. Cold-rolled sheet metal plasticity District, Guangzhou, shape stability. Hot rolled coils cold rolled coils is as raw material, at room temperature below the temperature of recrystallization rolling, including plates and volumes, many domestic steel mills such as Baosteel, Wuhan Iron and Steel, Anshan Iron and Steel, etc. can be produced. Which delivery is called steel sheets, also known as box board or tablet; length is very long, coiled delivery called strip, also known as coil.