| 摘要 |
The present invention related to gripping means for use with a unit (2) to be inserted into and held relative a pipeline (1), where the gripping means (3) comprises at least to gripping elements (300) arranged around the circumference of the main body (10) and formed with an outer surface (301) for contact with the internal wall of a pipeline. The outer surface of one gripping element in at least a part has a form giving two separate contact sections between the gripping element and an internal wall of a pipeline seen in a circumferential direction in an extended state of the gripping element. |
