| 摘要 |
A joint (4) between polymeric coated (6) metal pipelines (2) is covered with an adhesive (12) lined heat recoverable sleeve (10) positioned to overlie the coating (6) on either side of the joint (4). Prior to recovery of the heat recoverable sleeve (10) onto the coated pipelines (2, 6) a metallic mesh element (8) is positioned over the pipeline coating (6) on either side of the joint (4). After recovery of the sleeve (10) the entire joint is heated by an induction heater (7) to generate a high temperature not only (i) between the bare pipe (2) in the joint region (4) and the recovered sleeve (10), but also, by means of the mesh element (8), (ii) between the polymeric coating (6) on the pipelines (2) on either side of the joint (4) and the recovered sleeve (10). |
