Patent ID: 7806444

Claim:
A tubular element, the element comprising: a tube end welded in the tubular element by friction-welding for the purpose of transporting a fluid, a body ( 1 ) having a housing ( 5 ) formed therein to receive the tube end, the housing having an inlet segment ( 6 ) for the tube end and a welding segment ( 9 ) with an inlet defined by a surface ( 13 . 2 ) for initiating welding, wherein the welding segment ( 9 ) is cylindrical in shape and of diameter lying between the outside and inside diameters of the tube end, wherein the housing includes, between the inlet segment and the welding segment, at least one reception groove ( 8 ) receiving a portion of the tube end that is pushed back during welding, the reception groove having a flank with at least a portion forming the weld-initiating surface and on its other side an abutment flank for the pushed-back portion, each of the tube end and the tubular element are formed of a thermoplastic material, and the housing ( 5 ) includes, in the vicinity of the inlet segment ( 6 ), a guide segment ( 7 ) for guiding the tube end.