Our Professional Answer: At Ningbo Changshi, we understand that the choice of underground cable laying method depends on the project's specific needs, environment, and budget. The two primary methods are trenching and trenchless installation.

• Trenching (Direct Burial): This traditional method involves excavating a trench, laying cables in a protective sand bed, and then backfilling. It is cost-effective and straightforward for open areas. Essential equipment includes trenchers, cable rollers, and specialized cable pullers to ensure the cable is laid without exceeding its minimum bending radius or pulling tension.

• Trenchless Installation (Horizontal Directional Drilling - HDD): This method is ideal for urban areas, crossing roads, or sensitive environments where surface disruption must be minimal. It involves boring a pilot hole and then pulling the cable through a protective duct. This requires specialized HDD equipment, including drilling rigs and reamers, as well as high-strength cable pulling ropes and swivels to handle the high tensions involved in long pulls.

Our company manufactures and exports a full range of equipment and tools for both methods, providing comprehensive solutions for any project.