GYTS (metal strengthening member, loose tube stranded and filled, steel-polyethylene bonded sheathed outdoor optical fiber cable for communication) The structure of the optical cable is to sheath single-mode or multi-mode optical fiber into the inner filling made of high modulus plastic Waterproof compound in loose tube. The center of the cable core is a metal reinforced core. For some fiber optic cables, the metal reinforced core is also extruded with a layer of polyethylene (PE). The loose tube (and filling rope) is twisted around the central reinforcing core to form a compact and circular cable core, and the gaps in the cable core are filled with water blocking compounds. The steel-plastic composite tape is longitudinally wrapped and then extruded with a polyethylene sheath.
●Precise control of the excess length of the optical fiber ensures that the optical cable has good tensile performance and temperature characteristics
●PBT loose tube material has good hydrolysis resistance, and the tube is filled with special grease to protect the optical fiber
●Steel-polyethylene sheath has excellent compressive performance
●Smooth outer sheath enables the optical cable to have a smaller coefficient of friction during installation
●PE sheath has good resistance to solar radiation
●The following measures are adopted to ensure the waterproof performance of the optical cable: the loose tube is filled with special waterproof compounds; the cable core is completely filled with a steel-plastic composite with a moisture-proof layer.
Applicable laying
● Buried/underground
Dimensions of Cable Constructions
Fiber count | Structure | Fibers per tube | Loose tube diameter (mm) | CSM diameter/pad diameter (mm) | Nominal Thickness of outer jacket (mm) | Cable diameter/ Height (mm) | Cable weight (kg/km) |
4 | 1+5 | 4 | 1.8±0.1 | 1.4/1.4 | 1.4 | 8.5±0.3 | 75 |
6 | 1+5 | 6 | 1.85±0.1 | 1.4/1.4 | 1.4 | 8.5±0.3 | 75 |
8 | 1+5 | 8 | 1.9±0.1 | 1.4/1.4 | 1.4 | 8.5±0.3 | 75 |
12 | 1+5 | 6 | 1.9±0.1 | 1.4/1.4 | 1.4 | 8.5±0.3 | 75 |
24 | 1+5 | 6 | 1.9±0.1 | 1.4/1.4 | 1.4 | 8.5±0.3 | 75 |
36 | 1+6 | 12 | 1.95±0.1 | 1.5/1.5 | 1.6 | 8.8±0.3 | 85 |
48 | 1+5 | 12 | 1.95±0.1 | 1.5/1.5 | 1.6 | 9.3±0.3 | 90 |
60 | 1+5 | 12 | 1.95±0.1 | 1.6/1.6 | 1.6 | 9.3±0.3 | 90 |
72 | 1+6 | 12 | 1.95±0.1 | 2.0/2.0 | 1.6 | 9.6±0.3 | 95 |
96 | 1+8 | 12 | 1.95±0.1 | 1.4/3.2 | 1.6 | 11.5±0.3 | 120 |
144 | 1+12 | 12 | 1.95±0.1 | 2.0/5.7 | 1.8 | 14.2±0.3 | 185 |
216 | 1+6+12 | 12 | 1.95±0.1 | 2.0/2.0 | 1.8 | 14.5±0.3 | 200 |
288 | 1+9+15 | 12 | 1.95±0.1 | 2.0/3.7 | 1.8 | 16.2±0.3 | 240 |