| 摘要 |
<p>Arrangement for joining double-walled plastics pipes (9), manufactured with a smooth inner pipe (12) and a corrugated outer pipe (13) integrated with the inner pipe. To one end of the outer pipe is fastened a solid wall socket sleeve (1) with an inner surface arranged for holding a pipe end. This spigot sleeve (6) comprises a first solid wall spigot forming part (7A) which is inside and outside smooth, and an adjacent integrated solid wall sleeve forming part (7B) with an inside (10) which is mated to the outside of the plastics pipe (9), to be fastened tightly to this, by rotation welding.</p> |
