| 摘要 |
The invention relates to a tube end (2) made of plastic formed in a single piece and made by a moulding method; end comprising a first cylindrical wall (7) comprising a thread (8) on its outer surface and a second, smaller, cylindrical wall (9) placed inside the first cylindrical wall (7), the two cylindrical walls (7, 9) being coaxial, the inner face of the second cylindrical wall (9) comprising a discontinuous thread (10, 11) defined by a series of sectors (10) and interruptions (11). The invention also relates to a device and a method for the manufacture of the tube end.
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