| 摘要 |
<p>The ducting, comprising built-in means for channelling or guiding these cables or other elements, especially synthetic tubular ducting of a rigid construction, is characterised in that during its manufacture, especially by moulding, or after this operation, the inside of this ducting (1) is fitted with, longitudinally and over its entire length, a cord, rope, string, fibre, metal wire or other element (4) of very small cross-section and of high tensile strength, whilst at the same time being very flexible in order to accommodate the variations in shape and coiling of the ducting. <IMAGE></p> |
