FIELD: oil and gas industry.
SUBSTANCE: invention relates to a connecting pipes (600) unit, including: (a) a housing (620); (B) the first opening (622) located in the housing (620), wherein the opening has an inner surface, adapted to receive the first end of the first tubular element (927); (C) channel with open ends (630), located in the wall of the housing (620), moreover the channel (630) has a wide cross-section (632), disposed at the far end from the first opening, and a narrow cross-section (634), located between the a wide cross-section (632) and the first opening (622), and moreover the channel (630) hydraulically communicates with the first opening (622) through the narrow cross-section (634); and (d) the locking pin (860), having the base (862) and the tooth (864), going longitudinally from it, at that the base (862) is adapted to recieve to the wide cross-section (632), the tooth (864) is adapted to recieve in the narrow cross-section (634), the pin (860) is adapted to be inserted into the channel (630) with open ends, as a result of which the lower edge (865) of the tooth (864) is projected through the narrow cross-section (634) into the opening (622).
EFFECT: invention improves the pipes connecting method.
25 cl, 28 dwg
