Billets are freshly made steel that has not yet taken on the shape of a rectangle or metal bar. Billets must first be processed into more usable pieces in order for their products to be sold on the market. Raw steel is not usable in its pure form, so billets must be cast into shape. Although they have already been cast, they have to undergo a number of operations, such as cold and hot forming, in order to be sold or used for various applications.