| 摘要 |
A pipe connection for use in a ventilating duct system having ducts with circular cross-section is adapted to be inserted with a close fit into an outer pipe and be connected therewith. The pipe connection (1) has a circumferential groove (4), in which a circumferential seal (5) sealing against the inside of the outer pipe is arranged. A terminal edge portion (8, 9) of the pipe connection comprises an outer conical portion (8) which has a diameter decreasing towards the end of the pipe connection, and a circumferential guide surface (9) having such a diameter that said close fit is obtained. The axial length (L3) of the terminal edge portion (8, 9) constitutes about 1.5-5.5% of the diameter of the guide surface (9). The outer conical portion (8) at its end has a diameter which constitutes about 97-99.9% of the diameter of the guide surface (9). <IMAGE> |
