Steel Cold Rolled Products Types and Applications

Cold rolled steel is fundamentally hot rolled steel that has undergone supplementary processing. Once hot-rolled steel is cooled, it is re-rolled at room temperature to attain more exact dimensions and better surface quality.

"Cold rolled" steel is often used to describe various refined processing techniques. However, technically speaking, cold steel rolled refers specifically to sheet metal compressed between rollers, with products like steel bars and steel tubes produced through "drawing" rather than rolling. Other cold-finishing methods include turning, grinding, and polishing, each aimed at converting existing hot-rolled materials into superior quality products.

Characteristics of Cold Rolled Steel

Steel sheet cold rolling offers enhanced surface processing quality, increased precision, and more strict tolerance control.

The smooth surface of cold rolled steel plate often feels slick to the touch.

Cold rolled steel bars are typically square in shape, with clearly defined edges and corners.

Cold rolled pipes, including cold rolled seamless steel pipes, have excellent concentricity and uniform walls.

It’s no wonder that the superior surface properties of cold rolled steel coil spcc outperform those of hot roll carbon steel, making it essential in applications where precision is critical or appearance plays a significant role. However, the additional processing involved means that cold rolled steel products come at a higher price point.

In terms of physical properties, cold rolled (CR) steel is generally stronger and harder than standard hot-rolled (HR) steel. The work-hardening effect increases the hardness and resistance to fractures and deformation in materials formed at lower temperatures.

However, these additional treatments can induce internal stresses within the material. If these stresses are not released before cutting, grinding, or welding, issues like unpredictable deformation may arise.

In practice, cold rolled steel coils are employed across a diverse range of industries. In automotive manufacturing, for instance, components such as vehicle bodies and frames require precision and quality to meet safety standards. Cold rolled steel plates fulfill these needs by ensuring both aesthetic appeal and necessary strength. Additionally, in precision instruments like watches and medical devices, the high accuracy and surface qualities of cold rolled sheets are crucial for creating durable, small parts. In the construction and decoration sector, cold rolled carbon steel coil can be utilized to craft high-end door and window frames and decorative elements, enhancing both aesthetics and structural quality.