GYFXTS Central Tube Steel Tape Armored Aramid Yarn reinforced Aerial Duct Fiber Optic Cable
| Model | GYFXTS |
| Fiber counts | 2Core - 24Core |
| Tube | Central Loose Tube |
| Water-blocking material | Tube Gel and Water-blokcing Yarn |
| Armor | Corrugated Steel Tape (CST) |
| Strength Member | Aramid Yarn (or Glass Yarn as request) |
| Outer Sheath | PE or LSZH |
| Temperature Range | - 40 °C to 70 °C |
| Application | Aerial/ Duct UG Installation |
Core fiber: Single-mode (G.652D/G.657A2) or multi-mode (OM3/OM4), 250μm bare fiber, color-coded for easy identification.
Key design: Central loose tube (PBT) + thixotropic water-blocking gel + aramid yarn tensile member + corrugated steel tape (PSP) armor + PE outer sheath, forming a compact, lightweight, and robust structure.
The structure is as follows (from inside to outside):
| Layer No. | Component Material | Function |
| 1. Fiber Core | 250μm SM/MM fiber (2–24 cores), color-coded | Optical signal transmission |
| 2. Central Loose Tube | High-modulus PBT (polybutylene terephthalate), diameter ~2.0mm (2–12 cores) / ~2.8mm (24 cores) | Protect fibers, control excess fiber length for thermal/mechanical stability |
| 3. Water-Blocking Filling | Thixotropic water-blocking gel (filled in loose tube) | Prevent longitudinal water penetration, cushion fibers |
| 4. Water-Blocking Yarn | Dry water-blocking yarn (wrapped around loose tube) | Enhance water blocking, fill gaps between tube and armor |
| 5. Tensile Member | Aramid yarn (longitudinally laid) | Provide high tensile strength (aerial self-support) without metal fatigue |
| 6. Steel Tape Armor | Corrugated steel tape (PSP, longitudinally wrapped) | Resist side pressure, rodent bite, mechanical impact |
| 7. Outer Sheath | Polyethylene (PE) or Low-smoke zero-halogen (LSZH) | Resist UV, moisture, chemicals, abrasion; protect inner layers |
| 8. Ripcord (Optional) | Nylon/Polyester | Facilitate sheath stripping for splicing |
Features of GYFXTS Unitube Armored Fiber Optic Cable
Compact & Lightweight: Central tube design minimizes diameter/weight, easy to handle/install in narrow ducts/aerial spans.
Superior Tensile Strength: Aramid yarn reinforcement enables aerial self-support (no additional messenger wire needed for short/medium spans) and high pull tension during duct installation.
Excellent Mechanical Protection: Steel tape armor resists crush (≥1000N/100mm), rodent damage, and external impact; PBT tube hydrolysis-resistant for long-term stability.
Full Water Blocking: Gel-filled tube + water-blocking yarn/tape prevent longitudinal/radial water ingress, suitable for humid/rainy regions.
Wide Temperature Resistance: Operating temp: -40℃ ~ +70℃; Storage/installation temp: -30℃ ~ +70℃, adapts to extreme climates.
Good Bending Performance: Min. bend radius (installation: 20×OD; operation: 10×OD), flexible for routing in ducts/aerial corners.
Stable Optical Transmission: Low loss, low dispersion; excess fiber length control ensures signal stability under tension/temperature changes.
UV & Weather Resistance: UV-stabilized PE sheath resists aging, suitable for long-term outdoor exposure.
Long Service Life: ≥25 years under normal operating conditions.
Applications
Aerial Installation: Overhead deployment on poles/towers (urban/rural access networks, FTTH backhauls, campus/industrial park links); aramid yarn tensile member supports self-support for medium spans.
Duct Installation: Conduit/pipe laying in telecom corridors, underground pipelines, building risers; compact size fits narrow ducts, armor resists duct wall abrasion/rodent damage.
Access & Backbone Networks: Medium fiber-count (2–24 cores) links for telecom operators, ISP, enterprise campus, industrial parks, and smart city projects.
Harsh Environment Deployment: Areas with high mechanical stress, rodent infestation, humidity, or extreme temperature (e.g., suburban, mountainous, coastal regions).
Inter-Building & Campus Links: Short/medium-distance connections between buildings, data centers, and communication rooms (indoor/outdoor crossover).
Standards Compliance: Meets IEC 60794, ITU-T G.652/G.657, and national telecom cable standards (e.g., YD/T 769).
Installation Tips: Avoid sharp bends during pulling; use proper tension tools for aerial/duct installation; seal cable ends to prevent water ingress.
Fiber Count: Typically 2–24 cores (customizable for higher counts on request).
Summary
1. Cable Structure Parameter
| Model | GYFXTS | |
| Fiber Type | G652D G655 G657 50/125 62.5/125 | |
| Fiber Counts | 2-12 | 24 |
| Max.fibers per tube | 12 | 24 |
| Cable Diameter (mm) | 7.5 | 8.0 |
| Cable Weight (Kg/km) | 58 | 65 |
| Tube | Central Loose Tube PBT | |
| Strength Member | Aramid Yarn (or Glass Yarn) | |
| Armor | Corrugated Steel Tape | |
| Sheath | Single Jacket (PE or LSZH) | |
| Tensile (N) | Long/Short Term: 600/1500 | |
| Crush (N/100mm) | Long/Short Term: 300/1000 | |
| Min. Bending Radius (mm) | Static/Dynamic: 12.5D/25D | |
| Temperature (℃) | Storage /Operation: -40℃~70℃ | |
2. Fiber Color Identification
No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Color | Blue | Orange | Green | Brown | Slate | White | Red | Black | Yellow | Violet | Pink | Aqua |
3. Fiber Parameter G652.D (After Cable)
Item | Characteristics | Unit | Value | |
Geometrical | Cladding Diameter | μm | 125.0±1.0 | |
Cladding Non-circularity | % | ≤1.0 | ||
Core-Cladding Concentricity Error | μm | ≤0.6 | ||
Core Non-circularity | % | ≤12 | ||
Coating Diameter | μm | 245±10.0 | ||
Coating-Cladding Concentricity Error | μm | ≤12 | ||
Curl Radius | m | ≥4 | ||
Attenuation | Zero Dispersion Slope S0 | ps/nm²km | ≤0.092 | |
1625nm Attenuation | dB/km | ≤0.30 | ||
1383+/-3nm Attenuation | dB/km | ≤0.36 | ||
1310nm Attenuation | dB/km | ≤0.36 | ||
1550nm Attenuation | dB/km | ≤0.22 | ||
Point Discontinuity (1310nm & 1550nm) | dB | ≤0.05 | ||
Attenuation at 1285nm ~ 1330nm compared with 1310nm | dB | ≤0.03 | ||
Attenuation at 1485nm ~1580nm compared with 1550nm | dB | ≤0.03 | ||
Zero Dispersion Wavelength λ0 | nm | 1300≤λ0≤1324 | ||
Dispersion | 1285~1339nm Dispersion | ps/nm/km | ≤3.5 | |
1271~1360nm Dispersion | ps/nm/km | ≤5.3 | ||
1550nm Dispersion | ps/nm/km | 13.3~18.6 | ||
Nominal MFD Value（1310nm） | μm | 8.6-9.5 | ||
MFD Tolerance | μm | ±0.4 | ||
Bending | Cable Cut-off Wavelength λcc | nm | ≤1260 | |
1550nm Macro-bend Induced Attenuation（ 100turns with diameter of 60mm ） | dB | ≤0.5 | ||
PMD | Q | 0.01% | ||
Maximum Individual Fiber | ps/√km | 0.2 | ||
M | 20 cables | |||
Reel Length:
normally 2km, 3km, 4km, 5km (as your request)
Drum options:
Fumigated Wooden Drum
Steel-reinforced Wooden Drum
Plywood Drum
Cable and Drum Marking according to customer's requirements.
Shipping Pictures:
