FIELD: pipelines.
SUBSTANCE: invention relates to device for welding connections in pipeline. Proposed device consists of two parts welded to two ends of every pipe section at production site. Said parts have the same outer diameter as that of pipe welded joint for pipeline construction. Warmth generated during welding is dissipated by the device itself, thus the temperature on the pipe wall does not exceed 120 ± 20 °C. Such temperature conditions can withstand any paint coating developed for fluid transfer lines.
EFFECT: invention eliminates possibility of occurrence of internal corrosion in zones of welded joints of pipes from carbon steel, since it allows to avoid damages and maintains internal coating during welding works, which considerably increases service life of pipes.
6 cl, 12 dwg
