A hollow thin-walled pier pier road: road construction Concrete Pier Body molds can be sliding or construction, pay attention to the old and new concrete construction joint surface cleaning and chiseling, for the full-bridge color, should use the same kind of cement. Casting road pier process can be divided into three basic parts, namely, cast metal preparation, mold preparation and casting process. cast metal in the casting means for casting the casting metal material, which is a metallic element as a main component, and adding other metals or non-metallic elements and composition of the alloy, traditionally known as casting alloys, mainly cast iron, cast steel and cast non-ferrous alloys, metal smelting just a simple melting, smelting process also includes that poured into the mold metal, the temperature, chemical composition and purity are in line with expectations. Therefore, in the smelting process to be performed in order to control the quality of the various screening tests for the purpose of the liquid metal is reached only after the specified targets to allow pouring sometimes In order to achieve higher demand, even after the release of the liquid metal in the furnace after processing, such as desulfurization, vacuum degassing, refining, processing and other breeds or deterioration. equipment commonly used in metal melting cupola, electric arc furnace, induction furnace , resistance furnace, reverberatory furnace and so on.