Thin-wall support is a reinforced pipe fitting for branch pipe connection, which is mainly used to replace the traditional branch pipe connection methods such as reducing tee, reinforcing plate and reinforcing section. It has the advantages of saving materials, reducing cost, simple construction, improving medium flow, series standardization, convenient design selection, etc., especially in high pressure, high temperature, large diameter, thick wall pipes are increasingly widely used, replacing the traditional branch pipe connection method. The body of the branch pipe base is made of high-quality forgings, and the material is the same as that of the pipe, including carbon steel, alloy steel, stainless steel, etc.