FIELD: machine building.
SUBSTANCE: method involves drawing of a cap through an old pipe by means of a pulling rope; the above cap consists of a tip and a cylindrical body. A replacement pipeline is attached to rear part of the cap cylindrical body; the rollers, the rotation axes of which are perpendicular to the old pipe axis, are located on a conical tip of the cap.
EFFECT: improving passing ability of a tip, reducing equipment loads and increasing the length of a drawn pipe.
2 dwg
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