| 摘要 |
PURPOSE:To join pipes firmly by a method wherein barbed wire is wound about the outer periphery of the end of a resin pipe driving part of the barbs into this end, two resin pipes of this form are opposed to each other at their ends and a resin layer is overlaid over the outer peripheries of these resin pipes. CONSTITUTION:Barbed wire 2 is wound about the outer periphery of the end of an uncured resin pipe 1 driving part of the barbs 3 into this end to cure the resin pipe 1. While such two resin pipes 1 are opposed to each other at their ends, a resin layer 5 is overlaid over the outer peripheries of the ends of both resin pipes 1. In this manner, the secondary welding surface between the resin pipe and the resin layer is not separated, thereby these resin pipes can be welded firmly. |
