GYXTW Unitube 2 Parallel Steel PSP Armored Aerial/Duct Fiber Cable

GYXTW Central Uni-tube CST Armored Aerial/Duct Fiber Optic Cable with 2 parallel Steel Wire Strength

Product Overview:

GYXTW Central Loose Tube CST (Corrugated Steel Tape) Armored 2 Parallel Steel Wire Fiber Optic Cable is a heavy-duty, outdoor-oriented communication cable designed to withstand harsh environmental conditions (e.g., mechanical impact, moisture, rodent damage) while ensuring stable optical signal transmission. It integrates central loose tube core technology, CST armor, and parallel steel wire reinforcement, making it suitable for long-distance, rugged outdoor deployment scenarios.

• Fiber count: Typically 2–12 fibers (common models: GYXTW-4B1, GYXTW-6B1, GYXTW-8B1, GYXTW-12B1, where "B1" denotes single-mode G.652D fiber;), in some situations 24 fibers will be used.

• Operating temperature: -40°C to +70°C (meets harsh outdoor environmental requirements).

• Transmission mode: Supports both single-mode (long-distance, low loss) and multi-mode (short-distance, high bandwidth) fibers.

Model definition:

GYXTW is a widely used outdoor central loose tube fiber optic cable designed for long-distance communication, broadband access, and other outdoor transmission scenarios. Its name follows the Chinese national standard (GB/T 7424) for fiber optic cable (model) coding, where each letter represents a specific structural feature:

• GY: means outdoor fiber optic cable series

• X: indicates the central loose tube structure

• T: denotes the structure filled with tube gel or filling compound

• W: indicating the type of outer sheath: Steel tape and PE (polyethylene) bonded sheath with parallel steel wire inserted (referred to as W sheath)

Detailed Structure of GXTW Fiber Optic Cable:

GYXTW-12F

GYXTW-4F

Characteristics of GYXTW Optical Fiber Cable:

① Excellent Mechanical Protection

• Tensile Resistance: 2 parallel steel wires enable the cable to withstand high tensile forces (≥1500N for short-term installation, ≥600N for long-term operation), suitable for aerial suspension (e.g., between utility poles) or underground pulling.

• Lateral Pressure Resistance: CST armor provides strong anti-crushing performance (≥3000N/100mm), preventing damage from heavy objects (e.g., vehicle rolling in underground ducts) or construction activities.

• Rodent & Impact Resistance: Corrugated steel tape is hard enough to resist gnawing by rats/mice and absorb impact energy (e.g., falling debris in industrial areas).

② Superior Environmental Adaptability

• Waterproof & Moisture-Proof: The central loose tube is filled with water-blocking gel, and the outer PE sheath is tightly sealed, achieving full water blocking (no water penetration for ≥100m under 1m water column for 24h).

• Weather Resistance: PE sheath resists UV aging (service life ≥20 years outdoors) and extreme temperatures (-40°C to +70°C), suitable for cold northern regions, hot southern areas, and coastal humid environments.

• Anti-EMI & Corrosion Resistance: Galvanized CST armor blocks electromagnetic interference (critical for power utility networks, where high-voltage lines generate EMI) and resists rust (galvanization layer prevents oxidation).

③ Stable Signal Transmission

• Low Attenuation: The loose tube design isolates fibers from mechanical stress (e.g., bending, stretching), minimizing signal loss (attenuation ≤0.36dB/km at 1310nm for G.652D SM fibers).

• Good Flexibility: Corrugated steel tape (vs. rigid steel pipe armor) allows the cable to bend moderately (bending radius: ≥10× cable diameter for static use, ≥20× for dynamic use), facilitating installation in narrow ducts or around corners.

④ Cost-Effective & Easy Installation

• Balanced Cost: Compared to fully armored cables (e.g., steel wire armoring), CST armor reduces weight (cable weight ≤15kg/100m for 12 fibers) and cost while maintaining protection.

• Simplified Installation: Lightweight design and parallel steel wires (for aerial suspension) reduce the need for heavy lifting equipment; compatible with standard fiber optic termination tools (e.g., fusion splicers).

Typical Applications:

(1) Telecommunication Backbone Networks

• Used in long-distance transmission between cities or provinces (e.g., connecting core routers in MANs). Single-mode GYXTW cables (e.g., GYXTW-12B1) support 10G/100G Ethernet signals over distances of 40–80km (without amplification).

(2) Broadband Access Networks (FTTx)

• Deployed in " Fiber to the Village (FTTV)" or "Fiber to the Building (FTTB)" projects. For example, GYXTW-4B1 cables are used to connect central offices (COs) to residential building distribution boxes, enabling high-speed broadband (100Mbps–1Gbps) for users.

(3) Aerial Installation

• Common in rural or suburban areas where direct burial is difficult. Steel-core GYXTW cables are hung on utility poles (supported by brackets) to transmit signals across long distances (e.g., connecting villages to town COs).

(4) Duct & Direct Burial

• Pulled into underground ducts (e.g., in urban roads) or directly buried in soil (with proper backfilling). The water-blocking and anti-corrosion design ensures long-term stability in underground environments.

(5) Industrial & Special Scenarios

• Used in non-metallic sensitive areas (e.g., oil refineries, power plants) where EMI or lightning risks exist. FRP-core GYXTW cables avoid sparking and signal interference, meeting safety standards.

FAQ:

Q1: What is the maximum fiber count for GYXTW?

Q2: Can GYXTW be used indoors?

• PE-sheathed GYXTW: Not recommended (PE emits toxic smoke when burned).

• LSZH-sheathed GYXTW: Yes (meets indoor fire safety standards, e.g., IEC 60332-3). However, for pure indoor use, smaller cables (e.g., GJFJV) are more cost-effective.

Q4: How to maintain GYXTW cables to extend their service life?

• Avoid excessive pulling or bending (minimum bending radius: ≥10× cable diameter for static use, ≥20× for dynamic use).

• Inspect cable joints (e.g., splice closures) regularly for water leakage.

• Clear vegetation or debris around aerial/duct cables to prevent abrasion.

• For direct burial cables, mark the route to avoid accidental damage during construction.

Q5: Does GYXTW support 5G and high-speed data transmission?