FIELD: in-field routing of miscellaneous pipelines. SUBSTANCE: system platform carries set 5 of process-laser beam generating units. Secured in immediate proximity of outlet ports 9 of generating units 5 are reflecting mirror 11 and focusing system 10 with drive for displacing along radiation axis. Generating units 5 contact tubes meant for soldering by means of wheels mounted on external members of units and are free to rotate during welding process. Laser beam transport distance from outlet port of generating unit to weld is rather short which eliminates faults in welded joints making pipeline running to power station most reliable. EFFECT: improved reliability of welded joints, reduced space requirement. 4 cl, 3 dwg
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