| 摘要 |
Flanged coupling rings (3, 4) for duct elements (1, 2) each have a mounting section (8, 9) configured to be mounted on a connection portion (12, 13) of the duct element, and flange means (10, 11) extending outwards from the periphery of the mounting section (8, 9). The flange means (10, 11) has, along its periphery, flanged coupling portions for connecting two duct elements (1, 2), each of which is provided with a coupling ring (3, 4), by means of external coupling means (5, 6) configured to engage with the flanged coupling portions. A coupling arrangement and a method are disclosed as well. <IMAGE> |
