Centrifugal casting characteristics (1) centrifugal casting process is so far above the molten steel casting several times under normal gravity conditions of solidification molding, cast solved the problem of loose tube inside, high density metal, its row slag, good exhaust effect. High (2) centrifugal casting dimensional accuracy, uniform thickness, provide a favorable environment to ensure the accuracy of the size of the subsequent processing of the product. (3) centrifugal casting process for small-volume, multi-species multi-standard, high-quality, high value-added steel pipe production, with high flexibility. Application specific products industry and product content: Composite Wear straight pipe, composite wear-resistant elbow, composite three, four and composite diameter pipe fittings such as the power industry: transport coal, transport cinder composite wear-straight, bend tubes and other kinds of special composite wear-resistant pipe; mine system: filling underground engineering wearable straight pipe, pipe and other various Yixingguan pieces; concentrator: tailings pipeline, concentrator complex internal processes in the slurry transport wearable straight, elbow, tee, cross and other various shaped composite overcurrent pipe; coal industry: long-distance transport of pulverized coal in a straight pipe, elbow, tee, cross; washery coal washing process in straight pipe, elbow, tee, cross and other various shaped composite overcurrent fittings; smelting industry: mineral and solvent delivery composite straight, bend and and other kinds of special wear-resistant composite pipes. Since the mechanical properties of metallurgical bonding interface between the substrate and the cladding layer has a sufficient bonding strength, usually reaches more than 300Mpa; composite can enhance the strength or toughness of the corresponding base, to achieve mechanical properties complementarity; choose different properties of composite materials, to obtain excellent resistance to corrosion, or the ability to wear harsh environments, to extend the service life of steel.