FIELD: process engineering.
SUBSTANCE: invention relates to welding of metal butted pipes (c1, c2). In compliance with proposed method, penetration is carried out from outside. Sole welding bath is produced by simultaneous effect produced by at least one laser beam 1 transmitted via optical fiber and at least one electric arc in atmosphere of protective gas generated from consumable electrode 2a that makes filler material. Laser beam focusing point is adjusted within limits ±5 mm above or under the bottom of skew formed by two pipes. Invention can be used, mainly, for construction of pipelines.
EFFECT: higher quality of pipelines welding.
11 cl, 4 dwg
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