FIELD: metallurgy.
SUBSTANCE: invention relates to welding production and can be used for pipe welding, for example, in field conditions. Welding system comprises first and second pipe engagement devices configured to engage with inner surface of appropriate pipe with their fixation, one or more welding torches configured to be arranged inside pipes to create internal weld seam within contact surface between pipes, at least one engine for rotating the burners along the contact surface area between the pipes and one or more processors configured to control the motor and the welding torches to generate the finished annular weld, wherein the processors are configured to change the advance angle of the welding torches during the welding process.
EFFECT: use of the invention improves the quality of welded joints of pipes.
34 cl, 169 dwg
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