GYXTW Central Tube CST Armored Aerial/Duct Fiber Cable

GYXTW Uni-tube Armored Fiber Optic Cable

Central Loose Tube CST(Corrugated Steel Tape) Armored 2 Parallel Steel Wire reinforced 

GYXTW-12

GYXTW-4

Basic Description:

• CST Armoring: Corrugated Steel Tape (CST) wrapped around the cable core to provide mechanical protection against compression, impact, and rodent bites.

• 2 Parallel Steel Wires Strengh Member: Two high-strength steel wires placed parallel to the cable axis, significantly improving the cable's tensile strength (critical for aerial installation or long-span deployment).

Detailed Structure of GYXTW Optical Fiber Cable:

The cable follows a layered design, from the innermost optical fibers to the outermost sheath, with each layer serving a specific protective or functional purpose. The structure is as follows (from inside to outside):

Features of GYXTW Fiber Optic Cable:

(1) Excellent Mechanical Performance

• High Tensile Strength: The 2 parallel steel wires enable the cable to withstand tensile forces of up to 1500-2000 N (depending on wire diameter), making it ideal for aerial installation (e.g., spanning between utility poles) or long-distance buried deployment (resisting pulling during laying).

• Strong Impact/Compression Resistance: The CST armor layer (corrugated structure) absorbs external impact and compression, preventing damage to the internal fiber core—suitable for areas with frequent human activity (e.g., near roads) or animal interference (rodents).

(2) Superior Environmental Adaptability

• Moisture & Water Blocking: The central loose tube’s water-blocking gel and PE/LSZH outer sheath form a dual moisture barrier, ensuring no water intrusion even if the sheath is slightly damaged. The cable meets the "water tightness" standard for outdoor cables (no water leakage after 24-hour immersion).

• UV & Aging Resistance: The outer PE/LSZH sheath is added with UV stabilizers, allowing long-term exposure to sunlight (aerial use) without sheath cracking or performance degradation (service life: ≥20 years).

• Corrosion Resistance: Galvanized steel (for CST and steel wires) and chemical-resistant sheath materials resist corrosion from soil salts, industrial pollutants, or acidic/alkaline environments.

(3) Stable Signal Transmission

• Low Fiber Attenuation: The central loose tube design minimizes micro-bending of fibers (caused by temperature changes or mechanical stress), ensuring stable signal transmission. For single-mode fibers (G.652D), attenuation is as low as 0.36 dB/km (at 1310 nm) and 0.22 dB/km (at 1550 nm).

• Temperature Stability: The loose tube and sheath materials have a wide operating temperature range of -40°C to +70°C, adapting to extreme cold (e.g., northern regions) or high-temperature (e.g., desert areas) environments.

(4) Easy Installation & Maintenance

• Lightweight & Flexible: Compared to fully armored cables (e.g., steel wire armoring), the CST layer and parallel steel wires balance protection and flexibility, reducing installation difficulty (e.g., bending around poles).

• Clear Structure: The central loose tube design simplifies fiber splicing and maintenance—technicians can quickly access fibers without disassembling complex stranded structures.

Applications:

(1) Aerial Communication Lines

• Deployed between utility poles (aerial installation) for rural, suburban, or highway communication networks. The 2 parallel steel wires bear the cable's weight, while the CST armor resists wind load and bird damage.

• Example: Connecting 4G/5G base stations in remote areas or transmitting data between municipal communication hubs.

(2) Direct Buried Installation

• Buried directly in soil (without a protective pipe) for urban backbone networks, industrial parks, or campus perimeter networks. The CST armor and outer sheath resist soil pressure, rodent bites, and chemical corrosion.

• Example: Laying between data centers in different industrial zones to build a low-latency optical fiber backbone.

(3) Harsh Environment Projects

• Mining Areas: Resists vibration, impact, and dust; used for underground mine communication (though typically with additional flame-retardant sheaths).

• Coastal Regions: Corrosion-resistant materials (galvanized steel, PE sheath) withstand salt spray and high humidity.

• Power System Matching: Used in power communication networks (e.g., accompanying high-voltage transmission lines) to transmit monitoring data—LSZH sheath options meet fire safety requirements for power facilities.

(4) Emergency & Temporary Networks

• Rapidly deployed for disaster recovery (e.g., after earthquakes or floods) due to its high tensile strength and easy installation, restoring communication in damaged areas.

Summary