A.M.Zabelin,E.V.Zelenov,G.Y.Mikylshin.

The offered laser complex for welding main line pipelines can be used in field requirements: tundra, steppe, desert . The complex includes mobile means, platform with processing equipment, power station, technological laser, control system,additional equipment.. Complex distinctive feature is the presence on platform the shop of laser heads, on which in immediate proximity from their output windows are supported reflecting mirror and focalizing system with drive, moving along beam axis. The heads are in contact with tubes by means of wheels fixed on exterior elements of heads, and are rotated during process of welding. Such construction allows maximum to reduce length of beam transmitting from an output window of the head up to a place of junction and by that to eliminate welding flaws, that in turn improves operation reliability of pipeline. Besides that, arrangement the laser heads in shop allows to increase compactness, that is actual by operation in field requirements.