| 摘要 |
<p>Plastics tubing (1) includes a first tube (2) having a series of formations (3) on the outer surface thereof, reinforcing material (4) applied on said outer surface, and a second tube (5) applied, for example by extrusion, over the first tube (2) and the reinforcing material (4) so as to entrap the reinforcing material (4) between the first (2) and second tube (5). The tubing of the invention requires less material than prior art tubing to achieve a given strength and is consequently highly flexible due to less material being needed for that strength.</p> |
