Cold-rolled steel strip typically ranges in thickness from 0.2 to 3 mm and in width from 100 to 2000 mm. Produced using hot-rolled steel strip as a raw material, it is processed into finished form at ambient temperature using four-high or six-high cold rolling mills. Steel strip with a thickness of less than 0.2 mm is referred to as ultra-thin strip or foil; this material is produced by subjecting cold-rolled strip to further processing-typically via rolling on multi-roll mills.
Due to the extensive variety of product specifications, high dimensional precision, superior surface quality, and mechanical and processing properties that surpass those of hot-rolled steel strip, cold-rolled sheet and strip steel are widely utilized across numerous industrial sectors. These include mechanical manufacturing, automotive production, railway rolling stock, structural engineering, aerospace and rocketry, light industry and food packaging, electronics and instrumentation, and home appliances.
Cold-rolled steel strip encompasses a vast array of product varieties, each involving distinct production processes. Representative examples of cold-rolled steel strip products include metal-coated sheets (such as tin-plated and galvanized sheets), deep-drawing steel sheets (predominantly used in the automotive industry), electrical silicon steel sheets, stainless steel sheets, and coated (or composite) steel sheets. Finished cold-rolled steel strip products are supplied in various forms-such as cut-to-length sheets, coils, or slit strips-depending on specific user requirements.
The primary categories of cold-rolled steel strip varieties include carbon structural steel, alloy and low-alloy steel sheets, stainless steel sheets, electrical steel, and other specialized steel sheets.
