The fibers are positioned in loose tubes that are made of high-modulus plastic and filled with tube gel. The tubes (and fillers) are stranded around a non-metallic central strength member(FRP) to form a cable core. The core is filled with water-blocking compound and armored with laminated Aluminium tape(APL) . Stranded steel wires are applied as the messenger. Finally, a figure-8 PE outer jacket is extruded.
Equipped with the most advanced fiber drawing towers, high-speed proof testers,and other optical and mechanical testing facilities, CROFC is capable of producing 15 million core kilometres fibers and cables with superior performance.
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