Abstract: In order to enhance the operation efficiency and quality of cutting of the run-on and run-off tabs during the production of the SAWL pipe,an industrial robot-based automatic cutting system of the said the steel pipe is designed. The system adopts the laser range sensor to detect the position of the tabs,while the robot automatically plans the cutting path based on the position data,and then gets the cutting torch automatically complete the cutting of the tabs,having been capable of meeting relevant requirements for cutting the run-on and run-off tabs of the SAWL pipe. It is concluded via the the actual operation result that the above mentioned system is capable of automatic cutting the run-on and run-off tabs of the weld steel pipe,featuring such advantages as smooth and neat cut,consistent running,reduction of the labor intensity and enhancement of the productivity.