| 摘要 |
A pipe 50, for connection with a pipe fitting 12, has an integrally formed circumferential ridge 52 extending radially outwardly. The ridge 52 is used to provide a fluid tight seal with the pipe fitting 12. The pipe fitting 12 can have a corresponding shape to the ridge 52, and the ridge 52 can be formed by deforming part of the pipe 50. The pipe is secured to the fitting 12 by way of a threaded nut 18. The thickness of the wall of the pipe 50 can be substantially constant across the ridge 52. The ridge 52 can have a leading inclined and a trailing inclined edge, and be positioned adjacent an end of the pipe 50. The ridge 52 can have the ability to deform when compressed across its width, in a uniform fashion, with the midpoint of the ridge 52 bowing. |
