GYTS53 Double CST Armor Underground Direct Buried Fiber Optic Cable

GYTS53 Outdoor Stranded Loose Tube Double Steel Tape Armored Underground Direct Buried Fiber Optic Cable

Description:

GYTS53 Double Steel Tape Armored Double Jackets Cable is a highly ruggedized outdoor fiber optic cable specifically designed for underground direct burial scenarios. It integrates multiple protective layers to resist harsh underground conditions (e.g., soil pressure, moisture, corrosion, rodent damage) while ensuring stable optical signal transmission. It is widely used in long-distance communication networks, municipal infrastructure, and industrial backhaul systems.

Its core function is to transmit optical signals over long distances (tens to hundreds of kilometers) in underground environments, with fiber counts ranging from 2 to 288 cores (common specifications: 12core, 24core, 48core, 96core, 144core) and support for both single-mode (SM, e.g., G.652D, G.657A1) and multimode (MM, e.g., OM3, OM4) fibers.

Detailed Structure of GYTS53 Double Jacket Double Armor Direct Burial Optical Fiber Cable:

The 2-288 fibers are positioned in loose tubes made of high modulus plastic and filled with gel. Tubes (and fillers) are stranded around the metallic central strength member (steel wire) to form the cable core. A Corrugated Steel Tape (CST) is longitudinally armored over the cable core, which is filled with the water-blocking compound. Then the cable core is covered with a PE inner jacket. After another Corrugated Steel Tape(CST) is longitudinally armored over the inner jacket, finally the cable is completed with a PE outer jacket.

GYTS53 Direct Burial Cable

GYTS53 Structure

Features of GYTS53 Double CST Armored Underground Direct Buried Fibe Optic Cable:

(1) Excellent Underground Environmental Resistance

• Moisture & Water Blocking: The loose tube is filled with water-blocking gel, and the stranding layer uses water-blocking compound—effectively preventing longitudinal water seepage (a common risk in underground cables due to soil moisture or groundwater).

• Corrosion Resistance: Galvanized steel tapes resist rust from soil moisture, and the PE outer sheath is inert to most soil chemicals (acids, alkalis, salts), ensuring a service life of 20–30 years.

• Rodent & Pest Protection: Double steel tape armoring is hard enough to resist gnawing by rodents (e.g., rats, moles) or damage by underground insects—critical for rural or greenbelt burial areas.

(2) Strong Mechanical Performance

• Tensile Resistance: The central strength member (steel wire/FRP) and stranded structure allow the cable to withstand tensile forces of 1500–3000N (depending on fiber count), suitable for pulling during trenchless installation (e.g., horizontal directional drilling).

• Lateral Pressure Resistance: Double steel tapes can bear lateral pressure of ≥10kN/100mm, preventing cable deformation or fiber breakage from soil compaction (e.g., vehicle traffic above the burial path).

• Impact Resistance: The thick PE outer sheath and steel tapes absorb impact from rocks or construction equipment during installation.

(3) Stable Optical Transmission

• The loose tube design decouples the optical fiber from external mechanical stress (e.g., bending, stretching), minimizing microbending loss (a major cause of signal attenuation).

• Supports wide operating temperatures: -40°C to +70°C, adapting to extreme climates (cold northern regions or hot southern areas).

(4) Easy Installation & Maintenance

• Flexible structure: The stranded loose tube design makes the cable easy to bend (minimum bending radius: 10× cable diameter for static installation, 20× for dynamic installation), suitable for narrow trenches or curved paths.

• Clear identification: Loose tubes are color-coded (e.g., blue, orange, green) for quick fiber core identification during splicing or maintenance.

Applications:

(1) Telecommunication Backbone Networks

• Used as the "underground backbone" for telecom operators (e.g., China Mobile, AT&T) to connect cities, districts, or data centers. It transmits large-capacity signals (e.g., 5G, FTTx backhaul) over long distances with low attenuation.

(2) Municipal Infrastructure

• Integrated into municipal projects such as road reconstruction, subway construction, or smart city networks. Buried under roads, sidewalks, or greenbelts to avoid above-ground interference (e.g., construction, weather).

(3) Power System Communication

• Used in power grids (e.g., 110kV/220kV transmission lines) for "power communication integration" (OPGW’s underground complement). It transmits operational data (e.g., grid monitoring, relay protection signals) between substations, with steel armor resisting electromagnetic interference (EMI) from high-voltage lines.

(4) Industrial & Mining Areas

• Buried in industrial parks, mines, or oil fields to connect production facilities (e.g., factories, mining equipment). The corrosion-resistant and rodent-proof design adapts to harsh industrial environments (e.g., chemical emissions, mine soil).

(5) Rural & Suburban Networks

• Deployed in rural broadband projects (e.g., "Broadband to the Village") where above-ground poles are difficult to install. Direct burial under farmland or dirt roads reduces maintenance costs and avoids damage from wind or storms.