| 摘要 |
The invention concerns a cable duct characterised in that it comprises a multilayer structure including: a continuous inner layer consisting of a band iron (10), said band iron comprising at least a longitudinal rib (11) helically arranged with its lateral edges substantially contiguous, said rib forming a continuous helicoidal mesh; and an outer layer (20) of extruded plastic material, arranged on said inner layer (10), at least on the zones (12) located between the ribs forming the continuous helicoidal mesh (11).
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