| 摘要 |
<p>A fluid-transporting pipe, such as a fuel pipe for a motor vehicle, having zero permeability to the transported fluid, has an inner tubular layer (10) such as made by extrusion of a suitable plastics material or an elastomer or thermoplastic elastomer. A metallic layer (11) is formed thereon by wrapping it with a ribbon (12) of metallic material, the metallic material having a low melting point and made, for example, of a metal alloy of indium, lead and tin. The ribbon is wound to provide overlapping regions (12A). The metal in these overlapping regions (12A) is then fused together by the heat produced by over-extrusion of an outer layer (14) of a plastics material or of an elastomer or thermoplastic elastomer. In this way, an homogeneous metal layer (11) is produced. <IMAGE> <IMAGE></p> |
