Steel pipe perforating device

The utility model relates to a steel pipe technical field that punches, the name is a steel pipe perforating device, including puncher and inner part, the puncher has following base and punches the punching press head, characterized by: install the track on the base right side, the dolly is installed on the track in addition, and power device is connecting the wheel of dolly in addition, the dollyon the conveyor of guide arm has, conveyor has the delivery outlet of guide arm, the guide arm is installed at the delivery outlet in addition, inner part install the free end at the pipe, walking and the output of conveyor guide arm of wheel the same speed and opposite direction have, inner part position below the punching press head, install the output device of steel pipe in the left side of frame, output device has the delivery outlet, the delivery outlet is facing to inner part. Such steel pipe perforating device has inner part and places easily in the inner chamber of steel pipe and theaccurate advantage in loc