Answer from Ningbo Changshi: The professional process for pulling cable into an underground conduit is methodical to ensure safety and prevent damage to the cable. While specific steps may vary, the core process includes:

• 1. Site and Duct Preparation: Before any pulling begins, the route must be inspected. The conduit or duct is cleared of debris using a brush and mandrel to ensure a smooth path. A pilot line, often a durable nylon rope, is then "fished" through the duct using a blowing or vacuum system to verify the path is clear and to prepare for the main pull.

• 2. Equipment Setup: The cable reel trailer or drum stands are set up at the feed end of the conduit. The pulling winch, often a trailer-mounted hydraulic winch, is positioned at the receiving end of the run. A tension meter is installed on the pulling line to monitor the force in real-time.

• 3. Pulling and Lubrication: The pulling line is attached to the cable using a pulling grip and a Swivel to prevent twisting. As the pulling winch begins to operate, underground-Cable-Laying-Equipment-and-Tools.html target='_blank'>cable rollers and guides are placed at the entry point and at any bends to support the cable and reduce friction. A high-quality, approved lubricant is consistently applied to the cable as it enters the duct to minimize pulling tension and prevent sidewall friction damage.

• 4. Monitoring and Completion: The entire process is monitored by a team using communication systems to ensure a steady, controlled pull. The tension meter data is logged to provide a verifiable record that the cable was installed within its manufacturer-specified limits. Once the cable is pulled through, it is secured and prepared for termination or splicing.

Our one-stop supply model provides all the necessary equipment, from the winches and trailers to the rollers, lubricants, and pulling accessories, to execute this process flawlessly.