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.

Billet refers to semi-finished products used to produce steel, which cannot be directly used by society. Billet and steel are strictly divided according to the standard, which cannot be determined by whether it is the final product of the enterprise, but should be implemented according to the unified standard of the whole society.