AUTOMATIC WELDING SYSTEM FOR PIPE

The present invention relates to an automatic welding system for a pipe, wherein an automatic welding head having a plurality of wheels is installed on a pipe, and welding is easily performed through a welding device while the wheels are rotated along a circumferential surface of the pipe by chain driving. In the automatic welding system for a pipe, an automatic welding head 2 is rotatably installed on a pipe 1 and welding is performed with a welding machine 15, and a chain 3 is wound around and thereby installed on the pipe 1, the automatic welding head 2 is rotatably installed along the chain 3, the chain 3 is movably passed through openings 6a formed on both sides of the automatic welding head 2, the chain 3 is guided by a guide roller 11 while being wound around a gear driven to rotate by a driving motor 9 provided in the automatic welding head 2, and the pipe 1 is precisely welded using the welding machine 15 which is adjusted in position by a position adjustment unit of the automatic welding head 2 under the control of a control device while wheels 4 provided in the automatic welding head 2 rotate along the pipe 1.