Rebar is produced in small rolling mills. Generally, steel bar rolling mills are divided into general-purpose high-speed rolling steel bar rolling mills and 4-section high-volume steel bar rolling mills. The rebar production process is stepping heating furnace → rough rolling mill → intermediate rolling mill → finishing mill → water cooling device → cooling bed → cold shearing → automatic counting device → baler → unloading.

The billet used in the continuous small rolling mill is generally a continuous cast billet, with a side length of 130~160mm, a length of about 6~12 meters, and a single billet weight of 1.5~3 tons. Most of the rolling lines are arranged alternately between horizontal and vertical lines to achieve torsion-free rolling along the entire line. According to different billet specifications and finished product sizes, we can use small rolling mills with 18, 20, 22, and 24 stands. Bar rolling mostly adopts new technologies such as stepping heating furnaces, high-pressure water descaling, low-temperature rolling, and endless rolling. Rough rolling and intermediate rolling are developing in the direction of adapting to large billets and improving rolling accuracy. The finishing rolling mill is mainly Improved accuracy and speed (up to 18m/s). Product specifications are generally ф10-40mm, and there are also ф6-32mm or ф12-50mm.

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