| 摘要 |
<p>Device for supporting a welding pool at the location of a welded joint between two steel pipes which is to be made from the outside, comprising a frame to be positioned within the pipes and a number of welding pool shoes, which are themselves supported on the frame by means of holder means, which can be moved by operation means between a radially retracted resting position and a radially extended active position, in which the welding pool shoes with each other form a in circumferential direction substantially continuous floor for the welding pool, in which the operation means comprise a source for fluid under pressure and the holder means comprise chambers that can be pressurised with the fluid by the operation means, and in which the chambers have deformable walls.</p> |
