Assembly device capable of quickly assembling insertion welding pipe lines

The invention discloses an assembly device capable of quickly assembling a plug-in welded pipeline, and belongs to the technical field of plug-in welded pipelines, the assembly device comprises a first holding clamp and a second holding clamp, the first holding clamp is rotatably connected with the second holding clamp, the first holding clamp and the second holding clamp can be buckled so as to limit the plug-in welded pipeline during buckling, the first holding clamp and the second holding clamp are provided with a positioning plate group, and the positioning plate group is arranged on the positioning plate group. The positioning plate set can rotate relative to the first holding clamp or the second holding clamp, and the positioning plate set has a positioning state. Through cooperation of the overall structure, efficient and high-quality assembly of the insertion welding pipe lines is achieved, the insertion welding pipe lines with the pipe diameter being 0.5-1.5 inches are matched with an assembly device