Billets are produced through three processes: first, they are directly cast into billets from molten steel through the continuous casting equipment of the steelmaking system; The second is the semi-finished products of steel produced by the steel making system through the rolling equipment of the steel rolling system; Third, semi-finished products of steel ingots produced by the steelmaking system are processed by forging equipment.

Continuous cast steel square billet and rectangular billet are mainly represented by plain carbon steel, low carbon and low silicon cold rolled material, high-quality carbon structural steel, low alloy high strength steel, special steel grades, etc.