FIELD: pipe production.
SUBSTANCE: method involves jointing helical pipe profile and performing following pipe welding along helical perimeter. Helical end profile of one pipe is linearly joined with mating end profile of another pipe. After that the pipes are moved one to another in direction parallel to pipeline axis and pipes are retained in fixed position. Helical pipe joint recesses are connected with each other to create single cylindrical pipeline section formed as full turn.
EFFECT: possibility of permanent air-tight connection of helical pipe joint cavities to create single cylindrical pipeline section.
3 cl, 3 dwg
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