Cold rolled coil uses hot rolled coil as raw material and is rolling under recrystallization, but it is generally understood as rolling using normal temperature rolling materials.
Hot rolled coil is made of slab (mainly continuous casting billet) as raw material. After heating, it is made into strip steel by rough rolling mill and finishing mill. The hot steel strip coming out of the last rolling mill of finishing rolling is cooled to the set temperature by laminar flow, and then rolled into a steel strip coil by the coiler. The cooled steel strip coil undergoes different finishing operations according to the different needs of users. Lines (leveling, straightening, cross-cutting or slitting, inspection, weighing, packaging and marking, etc.) are processed into steel sheets, flat coils and slit steel strip products. Because hot rolled coil steel products have excellent properties such as high strength, good toughness, easy processing and good weldability, etc., they are widely used in ships, automobiles, bridges, construction, machinery, pressure vessels and other manufacturing industries.
With the increasing maturity of hot rolled dimensional accuracy, plate shape, surface quality and other new control technologies and the continuous advent of new products, hot rolled steel plates have been more and more widely used and have become more and more competitive in the market.
CR Cold Rolled Coil
