Elbow Hongsheng 12Cr1MoV of materials, Hebei 12Cr1MoV elbow processing alloy elbow for pipe installation in a connection fittings for the connection of the pipe bend. Connect two the nominal pipe of the same diameter pipeline to do a 90 ° turn. The alloy elbow is a variety of elbow collectively, of a variety of materials, common carbon steel, manganese steel, nickel steel. The alloy elbow uses a very broad. The ordinary bronze alloy elbow is more common in the general water pipe, but with the improvement of living standards, many water pipes are made of stainless elbow. Manganese steel alloy elbow withstand the impact of manganese steel, extrusion, material wear, excellent performance, is often used in the concrete pipeline, slurry pipeline and other wear and tear is more serious pipeline. High manganese steel alloy elbow was used in the fluid flow is more intense, the impact of relatively strong pipeline; nickel steel alloy elbow is often used in high concentrations of oxidizing acids (nitric acid, sulfur suan) at room temperature transport pipeline , it is in the pipeline restore an acid (hydrochloric acid, dilute sulfur suan) severe corrosion the the martensitic alloys elbow high temperature strength, oxidation resistance at 650 ° C or less unless the concentration of hydrochloric acid is low; and vapor corrosion resistant ability, but the weldability is poor. Therefore, often used in high temperature steam pipelines, water gas pipeline. Implementation of the standards: GB/T12459-2005, GB/T13401, GB/T10752-1999. The Hongsheng the elbow 12Cr1MoV material, Hebei 12Cr1MoV elbow processing