Reinforcing steel bar machining device for building construction

The utility model discloses a reinforcing steel bar processing device for building construction, which comprises a chassis, a transverse plate is fixedly arranged on the chassis, a longitudinal plate is rotatably arranged at the central position of the transverse plate through a connecting column, vertical clamping seats are fixedly arranged at two ends of the upper end surface of the transverse plate, transverse clamping seats are fixedly arranged at two ends of the upper end surface of the longitudinal plate, and the transverse clamping seats are fixedly arranged on the chassis. A positioning device is further installed between the upper end face of the longitudinal plate and the connecting column in a matched mode. The relative positions of the transverse plate and the longitudinal plate are adjusted according to the included angle of steel bars needing to be welded, welding of the steel bars at different angles is facilitated, rolling friction can be provided through the rotating stick, the left-right len