What is round steel?

Round steel is a solid strip of steel with a circular cross section. The specifications are expressed in millimeters of diameter. For example, "50" means round steel with a diameter of 50 mm. Round steel is divided into hot rolling, forging and cold drawing. Hot rolled round bars are available in sizes from 5.5 to 250 mm. Wherein: 5.5-25 mm round bar is mostly straight bundles supply, used for reinforcement, bolts and various mechanical parts; greater than 25 mm round steel, it is mainly used for 
manufacture of mechanical parts or for a seamless steel tube blank.