| 摘要 |
This invention concerns a method for joining or repairing a pipe system (1) that comprises a least two pipes (2) made of weldable plastic material comprising fitting a sleeve (5) made of weldable plastic material the distance between the two pipes (2), the sleeve (5) having a length A that exceeds the distance B between the mutually opposing pipes (2), such as to overlap each pipe end (2a, 2b) to a given extent C. The method has the working steps; placing an electrically conductive band (6) around one of the pipes (2), the band (6) having two ends (6a, 6b); connecting the band ends (6a, 6b)) to each other by placing the band ends (6a, 6b) overlapping each other; fitting the sleeve (5) over and against the pipe (2) and the band (6), and applying an electric current to the band (6) over a given period of time, thereby heating the band (6) to a determined temperature for a determined time and fusing the band (6) with the plastic surfaces of the pipe (2) and the sleeve (5) lying in abutment therewith to form a welding joint being fully executed around the pipe (2) and inside the sleeve (5). The invention also concerns an apparatus (12) to be used when working according to the method. |
