-
Function of steel strip in directly buried optical cable
Optical fibres are housed in loose tubes that are made of high-modulus plastic and filled with waterproof compounds. Steel wire is applied as central strength member. Ultraviolet radiation protected sheath. Cable filling is used in and. Steady demand growth: Global consumption of Steel Plastic Composite Tape (SPCT) for optical cables is expanding at 6–8% CAGR (2026–2035), driven by fiber-to-the-premises (FTTP), 5G backhaul, and data center interconnect deployment across all regions. Concentrated supply base: 60–70% of SPCT. Recommendation ITU-T L. 101 describes characteristics, construction and test methods of optical fibre cables for buried application. This material not only reliably meets the stringent requirements for precisely defined material properties over numerous delivery. Outdoors, it depends on whether the cable is buried directly, pulled in conduit, strung aerially or even placed underwater. Will the cable become wet or moist? Will it have to withstand high pulling tension for installation in conduit or continual tension in an aerial installation? Will the cable.
[PDF Version]