Cold rolled coil is hot rolled coil as raw material, at room temperature, the highest grade EDDQ, the highest strength of 590MPa, has the advantages of high dimensional accuracy, good surface quality, convenient processing, material saving and so on. It is widely used in home appliance industry, automobile industry, machinery industry, construction industry, galvanized and other industries.

Cold rolling: use hot-rolled steel coils as raw materials, pickle and remove scale, and then carry out cold rolling. The finished product is hard rolled coils.

The strength, hardness, and toughness of hard rolled coils increase due to cold hardening caused by continuous cold deformation. The plastic index decreases, so the stamping performance will deteriorate, and it can only be used for parts with simple deformation.

Hard-rolled coils can be used as raw materials for hot-dip galvanizing plants, because hot-dip galvanizing units are equipped with annealing lines. The weight of hard-rolled coils is generally 6-13.5 tons, and the steel coils are continuously rolled at room temperature for hot-rolled pickled coils. The inner diameter is 610mm.