GYTS53 Buried Optical Cable is a double-sheathed, steel-tape armored outdoor fiber optic cable designed for harsh direct buried underground installations. Featuring a central steel wire strength member, gel-filled loose tubes, longitudinal corrugated steel tape, and dual high-density polyethylene (HDPE) sheaths, GYTS53 provides structural rigidity, rodent protection, and long-term water blocking for long-haul telecom backbones, power utility grids, and municipal infrastructure networks.
Core Engineering Advantages
Underground Mechanical Armor: The combination of corrugated steel tape and double PE sheaths safeguards internal fibers against high soil compression, mechanical impact during backfilling, and severe rodent attacks.
Longitudinal Water Ingress Barrier: Water-blocking gel inside loose tubes combined with full-cable core filling compound prevents lateral water migration along the underground duct or soil trench.
Electromagnetic Compatibility: Designed with stable phosphatized steel central strength members to maintain geometric stability during high-tensile underground pulling operations.
Low Attenuation Performance: Compatible with ITU-T G.652D standard, maintaining minimal transmission loss across 1310nm and 1550nm operating wavelengths over long distances.
OEM & Project Customization
Core Capacity: 2 to 288 fiber configurations available per project demand
Sheath Options: Standard HDPE, Flame-retardant LSZH, Heavy-duty TPU, or Low-density PVC outer jackets
Cable Marking: Customized continuous meter marking, brand logos, and batch code printing on outer sheath
Packaging: Customized reel length (2000m, 3000m, 4000m or custom) on export-grade wooden drums
Color Identification: Standard 12-color code compliance for rapid field fiber identification
Customization Workflow
To ensure precise engineering compliance and seamless project execution, our OEM and project customization follows a structured four-step process:
Technical Requirement Evaluation: Share your project specifications, including fiber count, fiber type, sheath material, and target deployment conditions. Our engineering team reviews the technical parameters within 24 hours.
Specification & Sample Approval: We provide a detailed cable cross-section drawing and technical data sheet (TDS) for client sign-off. Physical cable samples can be dispatched for lab testing and field approval upon request.
Precision Manufacturing & Quality Control: Production begins strictly according to the approved engineering parameters. Every cable lot undergoes mandatory optical, tensile, and crush testing in compliance with IEC standards.
Inspection Report & Global Logistics: Upon completion, full Factory Acceptance Test (FAT) documentation is issued. Cables are packed on fumigated wooden drums with sealed ends, optimized for maritime, rail, or air freight dispatch.
Quality Verification & Testing
Prior to export dispatch, each production reel undergoes mandatory optical, mechanical, and environmental testing:
- Factory OTDR Attenuation Mapping (100% full-core inspection)
- Fiber Geometry and Diameter Verification
- Tensile Load Capability Test (IEC 60794-1-2-E1)
- Crush Resistance and Impact Test (IEC 60794-1-2-E3/E4)
- Water Penetration Test (24-hour water column immersion)
- Thermal Cycling Test (-40°C to +70°C chamber testing)
Packaging & Export Logistics
Export-Grade Drums: Solid wooden reels with flange protection and sealed inner cable ends to block moisture ingress during ocean transit.
Protection Layer: Polyethylene moisture-barrier wrapping with protective wood cladding.
Project Labeling: Dual-side weather-resistant drum labels detailing fiber count, reel length, gross weight, net weight, and batch serial number.
Container Loading: Steel strapping and wood-chock stabilization inside containers for sea, rail, and road freight.
Key Attributes
|
Brand Name |
Sheng Tang |
Model Number |
Gyts53 |
|
Type |
outdoor fiber optic cable |
Place of Origin |
Guangdong, China |
|
Number of Conductors |
≥ 10 |
Loose tube |
PBT |
|
Number of C |
≥ 10 |
Fiber Type |
single mode/multimode |
|
Sheath |
PVC, LSZH, TPU |
Fiber count |
2-288 Cores |
|
MOQ |
2000Meter/Meters |
Application |
Telecommunication, Aerial, Duct |
|
Port |
GUANGZHOU |
Place of Origin |
Guangdong, China (Mainland) |
Packaging And Delivery
| Selling Units | Single item | Single package size | 20X25X10 cm |
| Single gross weight | 2.000 kg |
Lead Time
| Quantity (meters) | 1 - 10000 | 10001 - 1000000 | > 1000000 |
| Lead time (days) | 8 | 20 | To be negotiated |
Customization options
| Option | Min. order: | Customization fee |
|
Customized logo As requested |
1000 meters | -- |
|
Customized packaging As requested |
1000 meters | -- |
|
Graphic customization As requested |
1000 meters | -- |
Product Description
| Cable Count (cores) | Tubes + Fillers | Out Sheath Diameter (mm) | Weight (kg/km) |
Min Tensile Strength (Long/ Short Term N) |
Min Crush Resistance (Long/ Short Term N/ 100mm) |
Min Bending Radius (Static/ Dynamic mm) |
| 2 ~ 36 | 6 | 13.7 | 190 | 1000/3000 | 1000/3000 | 10D/20D |
| 38 ~ 72 | 6 | 15.3 | 229 | 1000/3000 | 1000/3000 | 10D/20D |
| 74~96 | 8 | 15.9 | 244 | 1000/3000 | 1000/3000 | 10D/20D |
| 98 ~120 | 10 | 18 | 288 | 1000/3000 | 1000/3000 | 10D/20D |
| 122 ~144 | 12 | 19.2 | 325 | 1000/3000 | 1000/3000 | 10D/20D |
| 146~288 | 18 | 20.9 | 373 | 1000/3000 | 1000/3000 | 10D/20D |



Optical Cable Characteristics
| G.652D | 50/125μm | 62.5/125μm | ||
| Attenuation (+20℃) | @850nm | ≤3.0 dB/km | ≤3.0 dB/km | |
| @1300nm | ≤1.0 dB/km | ≤1.0 dB/km | ||
| @1310nm | ≤0.36 dB/km | |||
| @1550nm | ≤0.22 dB/km | |||
| Bandwidth (Class A) | @850nm | ≥500 MHz·km | ≥200 MHz·km | |
| @1300nm | ≥1000 MHz·km | ≥600 MHz·km | ||
| Numerical Aperture | 0.200±0.015NA | 0.275±0.015NA | ||
| Cable Cut-off Wavelength λcc | ≤1260nm | |||


FAQ
Q: Why is GYTS53 specifically recommended for direct burial over standard GYTS cable?
A: GYTS53 incorporates an additional inner PE sheath under its corrugated steel tape and an outer HDPE sheath on top. This double-jacket armor delivers significantly higher crush resistance and rodent protection needed for direct soil trenching without conduit.
Q: What fiber types can be specified for GYTS53 production?
A: We offer standard ITU-T G.652D single-mode, bend-insensitive G.657A1 single-mode, and OM1/OM2/OM3/OM4 multimode fibers based on network architecture requirements.
Q: What are the standard drum continuous lengths available for project shipping?
A: Standard delivery lengths are 2000m, 3000m, or 4000m per wooden drum. Custom reel lengths can be wound to minimize field splicing points for long-distance projects.
Q: What quality control documentation is supplied with every shipped order?
A: Each exported drum includes a Factory Acceptance Test (FAT) report, providing 100% full-core OTDR attenuation mapping and mechanical inspection results verified prior to dispatch.
Q: Can the outer jacket be customized for flame-retardant or indoor-outdoor transition zones?
A: Yes. While standard GYTS53 features an HDPE outer jacket for underground durability, an optional Low Smoke Zero Halogen (LSZH) outer sheath can be provided for projects requiring flame resistance.
Q: How does the cable design ensure standard color identification during field splicing?
A: Internal fibers and loose tubes follow the standard 12-color coding scheme (Blue, Orange, Green, Brown, Grey, White, Red, Black, Yellow, Violet, Pink, Aqua) for rapid fiber matching during installation.
Q: What key parameters should be provided to receive an accurate project quotation?
A: Please specify your required fiber count, fiber type (e.g., G.652D), total project quantity or reel lengths, outer sheath material (HDPE or LSZH), and destination port.
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