precabling system for the wiring inside buildings and method of implementing said wiring system

摘要

Tubes (21,22,23,24) are manufactured as a group in side by side formation the attachment between tubes being either continuous or at intervals. The tubes are made from a supple plastic such as polypropylene and the attachment is made with a weak glue. The tubes are installed inside a building as a first stage and cables, particularly optical cables are subsequently added as required