Directly Buried Cables and Duct Cables differ in their structural design, installation methodology, and intended application scenarios.
1.Main differences：
2. Common Models and Structural Types:
-- Directly Buried Cables (High Strength, Comprehensive Protection)
GYTA53: Dual-sheath, dual-armored structure. Features an inner aluminum tape layer for moisture resistance and an outer steel tape armor for enhanced crush resistance; this is the most representative model for direct burial applications.
GYTY53: Single-armored structure. Combines steel tape armor with a dual polyethylene sheath; offers excellent cost-effectiveness and is suitable for standard direct burial environments.
GYTA33: Steel wire armored structure. The suffix "33" denotes steel wire armor, which provides exceptional tensile strength; commonly used in terrain with steep gradients or for underwater installation.
GYFTY53: Non-metallic armored structure. Utilizes fiberglass or glass yarn for armor, offering superior lightning protection; suitable for direct burial in areas prone to lightning strikes.
-- Duct Cables (Smooth Surface, Optimized for Pulling)
GYTA: Layer-stranded structure. Features a longitudinally applied aluminum tape layer for moisture resistance and a smooth outer jacket; widely used for pulling through urban underground conduit systems.
GYTS: Steel tape armored structure (longitudinally applied). Offers superior lateral crush resistance compared to aluminum-armored cables; also suitable for duct installation, particularly in conduit sections subject to high external pressure.
Micro Air-Blown Cables: Ultra-lightweight, small-diameter design. Installed into conduits using air-blowing techniques.
3. Application Scenarios:
-- Applications for Directly Buried Cables:
- Long-haul Backbone Networks: Connecting provinces or remote regions across wilderness, deserts, forests, and other areas lacking existing underground conduit infrastructure.
- Along Railways/Highways: Directly buried within the available space alongside roadbeds or railway embankments. Specialized Scenarios (Rodent/Lightning Protection): In areas with high rodent activity or frequent lightning strikes, models featuring thickened steel armor or all-dielectric construction are selected.
-- Applications for Duct Cables:
- Urban Metropolitan Area Networks (MAN): Streets, residential zones, and other areas equipped with existing underground telecommunications conduit systems.
- Inter-office Connections: Backbone links connecting various telecommunications exchanges or substations within a city. FTTH Last Mile: Utilizing existing indoor conduits to route fiber optic cables into office buildings or residential homes.
Are you currently evaluating fiber optic cable deployment solutions for a specific terrain and require recommendations for specific product models? Please feel free to contact us at any time: @EBOCOM-Yulia Liu
