| 摘要 |
A device for thermal welding of connectors on the wall of plastic pipes, comprising male/female bushes (10, 11), heated by conduction by means of a plate (15), which are provided at their end with means for temporary coupling respectively to a suitable hole of the pipe and to the connector to be mated; the surface of the heads of the bushes provided with the coupling means has a parallel knurling (25, 26) formed by grooves and ridges. <IMAGE> |
