Tool for welding special-shaped pipelines

The utility model discloses a tool for welding special-shaped pipelines. The tool for welding the special-shaped pipelines comprises a bottom plate of a plane structure, at least one locating steel block and at least one piece of auxiliary equal angle steel are welded on the bottom plate, wherein the at least one locating steel block and the at least one piece of auxiliary equal angle steel are located on the same plane of the bottom plate, the number of the locating steel block and the number of the auxiliary equal angle steel need to be set according to the bending trend of a needed pipeline. When the tool for welding the special-shaped pipelines is used, the pipelines of other positions are welded, and then all the pipelines are connected according to the required connecting modes of a drawing, and are firmly connected with the corresponding pieces of equipment. According to the tool for welding the special-shaped pipelines, the alignment, assembling and welding of the bending parts of the pipelines can be