Those in the telecommunications pipeline engineering industry know that while the GYTA series optical cables are primarily designed for direct burial, standard GYTA cables are only suitable for ordinary soil conditions. In areas with gravel layers, frozen soil, or tidal infiltration in coastal buried pipeline areas, their mechanical protection level is clearly insufficient to meet construction standards. Shenzhen Xianquan Technology has specifically reinforced the GYTA333's structure based on the original stranded aluminum sheath structure. It features double-layer steel strip longitudinal overlap armor combined with a thickened PE outer sheath, and an inner layer filled with water-blocking yarn and water-blocking sealant across the entire cross-section, forming a complete waterproof and pressure-resistant protection system from the inside out.
We visited a trunk line laying site in a permafrost region in northern China. The construction team used a trenchless pipe jacking technique to lay the pipeline. Sharp-edged stones inside the pipes caused previous batches of optical cables to be easily scratched and damaged during installation. However, by using the Xianquan GYTA333 optical cable, nearly 8 kilometers of pipe jacking work was completed without any issues such as sheath scratches or steel strip deformation. In coastal and riverside buried applications, where soil salinity is high and groundwater seeps in year-round, this optical cable's aluminum sheath effectively blocks salt and alkali ion corrosion, and its water-blocking structure prevents longitudinal water seepage. Even when immersed in underground aquifers for extended periods, the fiber optic attenuation remains within the design range, eliminating the need for frequent loss retesting.
In addition to its upgraded physical protection capabilities, this optical cable's construction compatibility also aligns with the operating habits of frontline engineers. The standard stranded loose tube structure ensures uniform fiber excess length control, allowing for moderate stretching and bending during deployment. Whether manually dragging or using a traction machine, deployment speed doesn't need to be deliberately slowed down. Long-distance single-reel laying reduces the number of splice boxes required, lowering splice loss points and shortening on-site construction time. The manufacturer can customize fiber core counts according to project requirements, from standard 12-core and 24-core specifications to large-core 96-core and 144-core batch customization with stable production schedules. Sufficient stock is available, and urgent orders can be delivered in batches to meet project deadlines.