Specifications and Models of Reinforced Core Flame-Retardant Optical Cables

Reinforced core flame-retardant optical cables feature a central strength member, loose tube fiber arrangement, water-blocking compounds, and flame-retardant sheaths, available in armored and non-armored models for harsh environments.Core Construction and MaterialsCentral Reinforcing Core: Most models use a Fiber Reinforced Plastic (FRP) non-metallic core for tensile strength and structural integrity, avoiding electromagnetic interference, while some variants use a metallic core with polyethylene extrusion for added durability ( ).Loose Tube Design: Optical fibers (single-mode or multi-mode) are enclosed in loose tubes filled with water-blocking gel or compound, which prevents moisture ingress and protects fibers from hydrolysis ( ).Filler Ropes: These are spirally stranded around the central core to form a compact, circular structure, enhancing mechanical stability ( ).Sheath and ArmorInner Sheath: A polyethylene (PE) inner sheath is extruded over the core for additional protection ( ).Armoring Options:Double-sided corrugated steel tape (PSP) armor provides mechanical protection and flame resistance for armored models ( ).Non-armored versions rely on the FRP core and flame-retardant outer sheath for protection ( ).Flame-Retardant Outer Sheath: Constructed from flame-retardant polyethylene or similar materials, meeting fire safety standards for tunnels, subways, industrial sites, and urban networks ( ).Moisture Resistance: Longitudinally applied aluminum tape or water-blocking gel enhances durability in wet or subterranean environments ( ).Performance CharacteristicsMechanical Strength: High tensile strength and compressive resistance due to reinforced core and stranded design ( ).Temperature and Environmental Resistance: Suitable for harsh outdoor conditions, including high humidity, mechanical stress, and temperature variations ( ).Fire Safety: Flame-retardant sheaths and armored designs ensure compliance with fire safety standards, making them ideal for high-risk areas ( ).Models and ApplicationsGYFTZA53: Loose tube, layer-stranded, non-metallic reinforced core armored flame-retardant cable, suitable for tunnels, subways, industrial sites, and urban backbone networks ( ).GYTZA53-26~30Xn: Loose tube stranded reinforced core armored cable with metal core, suitable for pipelines, overhead, and direct burial installations ( ).GYFTZY: Non-armored, loose jacketed, non-metallic reinforced core flame-retardant cable, optimized for environments sensitive to electromagnetic interference ( ).Key ApplicationsUrban Communication Networks: Backbone and distribution networks requiring fire safety and long-term reliability ( ).Industrial Sites: Factories, refineries, and plants with high humidity, mechanical stress, and fire hazards ( ).Subterranean and Tunnel Installations: Ducts, subways, and confined spaces where flame retardancy and moisture resistance are critical ( ). These reinforced core flame-retardant optical cables provide a balance of mechanical durability, fire safety, and environmental resistance, making them suitable for a wide range of telecommunication, industrial, and urban infrastructure applications.