| 摘要 |
<p>A high quality composite tube consists of a plastic-impregnated tubular interweave of threads or fibres, the angle of which with respect to the centre line of the tube is the determining factor for the diameter. At least one end of the interweave is widened and folded over outwards or inwards one or more times. The widened end can serve as the connection element with another tube.</p> |
