GYXTW 光缆的结构是将 250μm 光纤套入高模量材料制成的松套管中，松套管内填充防水化合物。松套管外用一层双面涂塑钢带（PSP）纵包，钢带和松套管之间加阻水材料以保证光缆的紧凑和纵向阻水，两侧放置两根平行钢丝后挤制聚乙烯护套成缆。

The fibers, 250μm, are positioned in a loose tube made of a high modulus plastic. The tubes are filled with a water-resistant filling compound. The tube is wrapped with a layer of PSP longitudinally. Between the PSP and the loose tube water-blocking material is applied to keep the cable compact and watertight. Two parallel steel wires are placed at the two sides of the steel tape. The cable is completed with a polyethylene (PE) sheath.
 

        · 具有良好的机械性能和温度性能
        · Good mechanical and temperature performance

        · 松套管材料本身具有良好的耐水解性能和较高的强度
        · High strength loose tube that is hydrolysis resistant

        · 管内充以特种油膏，对光纤进行了关键性保护
        · Special tube filling compound ensure a critical protection of fiber

        · 良好的抗压性和柔软性
        · Crush resistance and flexibility

        · 双面涂塑钢带（PSP）提高光缆的抗透潮能力
        · PSP enhancing moisture-proof

        · 两根平行钢丝保证光缆的抗拉强度
        · Two parallel steel wires ensure tensile strength

        · 直径小、重量轻、容易敷设
        · Small diameter, light weight and friendly installation

        · 较长的交货长度
        · Long delivery length

        GYXTW 光缆符合 YD/T 769-2003 标准
        GYXTW cable complies with Standard YD/T 769-2003.