Steel pipe grouping device of pipe truss

The utility model relates to an engineering apparatus, in particular to a steel pipe grouping device of a pipe truss. The steel pipe grouping device comprises a lining pipe, a rib plate and a connection plate, wherein both ends of the lining pipe are welded and fixed after respectively extending to two to-be-assembled steel pipes of the pipe truss; the rib plate is welded on the side wall of the steel pipes of the pipe truss in the axis direction; and the connection plate is connected with both sides of the rib plate. When he steel pipe groups of the pipe truss can be assembled easily and conveniently only by mounting the lining pipes in the two steel pipes for welding and fixation and then connecting and fixing the rib plate by the connection plate. The lining plates are permanently placed inside the steel pipes so as to play a role in welding, backing and strengthening, thereby achieving reliable and stable connection. The thicknesses of the rib plate and the connection plate can be appropriately adjusted a