A billet is a product obtained by casting molten steel made in a steelmaking furnace. Steel billets can be mainly divided into two types from the manufacturing process: die casting billets and continuous casting billets. The die casting process has been basically eliminated. The billet is originally steel, and after processing, it can be used as mechanical parts, forgings, processing various steels, section steel Q345B channel steel, and wire is the role of the billet. Steel billets refer to semi-finished products used in the production of steel, which generally cannot be directly used by society. There are strict classification standards for billets and steel products, which cannot be determined by whether they are the final products of the enterprise, but must be implemented according to the unified standards of the whole society. Usually, billets and steels are easy to distinguish, but for some billets, which have the same specifications and the same purpose as steel (such as rolled tube billets), it can be determined by whether they are used in other industries and whether they have gone through the steel processing process. , Whether it has been processed by the finished rolling mill to distinguish.