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raw materials & chemicals > Semi-finished castings

Semi-Finished Castings

Semi-finished casting products are intermediate castings produced in a foundry that need further processing before being a finished good. There are four types: ingots, billets, blooms, and slabs.

Ingots are large rough castings designed for storage and transportation. The shape usually resembles a rectangle or square with generous fillets. They are tapered, usually with the big-end-down.

A billet is a length of metal that has a round or square cross-section, with an area less than 36 sq in (230 cm2). Billets are created directly via continuous casting or extrusion or indirectly via rolling an ingot. Billets are further processed via profile rolling and drawing. Final products include bar stock and wire.

Centrifugal casting is also used to produce short circular tubes as billets, usually to achieve a precise metallurgical structure. They are commonly used as cylinder sleeves where the inner and outer diameters are ground and machined to length. Because their size is not modified significantly, they are not always classified as semi-finished casting products.

Blooms are similar to billets except the cross-sectional area is greater than 36 sq in (230 cm2). Blooms are usually further processed via rotary piercing, structural shape rolling and profile rolling. Common final products include structural shapes, rails, rods, and seamless pipes.

A slab is a length of metal that is rectangular in cross-section. It is created directly from continuous casting or indirectly by rolling an ingot. Slabs are usually further processed via flat rolling, skelping, and pipe rolling. Common final products include sheet metal, plates, strip metal, pipes, and tubes.

Manufacturers | Suppliers
Dongguan GUANXIN Mold Materials Co., Ltd. China
Qingdao Industrial Supplies Imp. & Exp. Co., Ltd China
DanYang HuaLong Superior Steel Co.,Ltd China
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