What Is Cold-formed Steel?

Cold-formed steel refers to finished steel products of various cross-sectional shapes bent by steel plates or strips in a cold state. Cold-formed steel is an economical cross-section light-weight thin-walled steel, also known as steel cold-formed section or cold-formed section.

Cold-formed steel is the main material for making light steel structures. It has a variety of ultra-thin, reasonable and complex cross-sections that cannot be produced by hot rolling. Compared with hot-rolled section steel, in the case of the same cross-sectional area, the radius of gyration can be increased by 50-60%, and the section moment of inertia can be increased by 0.5-3.0 times, so the material strength can be used more reasonably; compared with ordinary steel structures ( That is, compared with the steel structure made of traditional I-beam, channel steel, angle steel and steel plate), it can save about 30-50% of steel.

Cold-formed steel is one of many steel varieties. The strip steel with a certain width passes through a set of longitudinally arranged rolls under normal temperature conditions, and is gradually deformed to meet the shape and size required by the use. After the determined size is cut into the corresponding length. This product is cold-formed steel. Of course, cold-formed steel can also be obtained by stamping, bending or drawing deformation methods. However, the roll forming method is suitable for large-scale industrial production. Its product quality, processing cost and production efficiency are unmatched by other methods. It is the main production process of cold-formed steel at present. If the unit is equipped with welding equipment (such as high-frequency welding, argon arc welding, etc.), it can also produce cold-formed steel with closed sections.