Hot-rolled round steel is a round solid long steel produced by hot rolling process. It has good hardenability, high hardness and good wear resistance. It belongs to construction steel. The specifications of hot-rolled round steel are 5.5-250 mm. Among them, the small round steel of 5.5-25 mm is mostly supplied in bundles of straight bars, which are often used as steel bars, bolts and various mechanical parts: hot-rolled round steel larger than 25 mm is mainly used to manufacture mechanical parts or seamless steel pipe billets.

Rolled round steel is widely used in many fields such as construction, machinery manufacturing, and automobile industry. It is favored for its excellent physical properties and processing characteristics.