Alloy elbows made of manganese steel are usually used in seriously worn pipes such as concrete pipes and mud pipes because of their excellent performance of withstanding impact, extrusion and material wear. High manganese steel alloy elbow is used in pipelines with severe fluid flow and strong impact; Alloy elbows made of nickel steel are usually used in pipelines containing high concentration of oxidizing acid (nitric acid, sulfuric acid) at room temperature, but they will be seriously corroded in pipelines containing reducing acid (hydrochloric acid, dilute sulfuric acid, etc.). ) unless the hydrochloric acid concentration is very low; Martensite alloy elbow has high high temperature strength, oxidation resistance and water vapor corrosion resistance below 650℃, but its weldability is poor. Therefore, it is often used in high temperature steam pipelines and water gas pipelines. Alloy elbows made of different materials will not cause pollution and will not affect transportation.

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