Round steel refers to a solid long steel bar with a circular cross-section. Its specifications are expressed in diameter in millimeters (mm). For example, "50mm" means a round steel with a diameter of 50 mm.
Round steel is divided into three types: hot rolled, forged and cold drawn. The specifications of hot-rolled round steel are 5.5-250 mm. Among them: small round steel of 5.5-25 mm is mostly supplied in straight strips and bundles, and is commonly used as steel bars, bolts and various mechanical parts; round steel larger than 25 mm is mainly used to manufacture mechanical parts and seamless steel pipe blanks. wait.
Classification by chemical composition: Carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to its chemical composition (i.e., carbon content). (1) Low carbon steel is also called mild steel. The carbon content is from 0.10% to 0.30%. Low carbon steel is easy to accept various processing such as forging, welding and cutting. It is often used to manufacture chains, rivets, bolts, shafts, etc.
