Overhead Lines Preformed Tension Clamp

In the construction of overhead power and communication lines, high-quality preformed tension clamps rely on rigorous material control and precision manufacturing processes. Handan Jinmai (JINMAI) products utilize high-strength steel wires that strictly adhere to power industry standards; these wires feature a uniform and dense galvanized coating, while their preforming parameters are precisely matched to various conductor and optical cable diameters. This ensures that their gripping strength, corrosion resistance, and fatigue resistance all fully meet engineering requirements. Furthermore, these clamps can be used in conjunction with preformed armor rods, suspension clamps, splicing rods, and other accessories to form a comprehensive hardware solution for overhead lines, thereby safeguarding the safety of the line throughout its entire lifecycle.

A preformed tension clamp consists of multiple strands of high-strength galvanized steel wire-or aluminum-clad steel wire-that have been preformed into a helical shape according to precise spiral parameters, resulting in a smooth surface and uniform wrapping. During installation, the clamp is simply wrapped directly onto the optical cable or conductor by hand; no crimping tools are required, as the helical structure inherently generates a uniform and continuous gripping force that evenly distributes tension across the entire contact area. One end of the clamp features an integrated preformed loop, allowing for direct connection to hardware components on the pole or tower-such as U-shackles or right-angle plates-to achieve rapid and reliable anchoring. This installation process is simple and highly efficient, significantly reducing both the difficulty and time costs associated with on-site construction.

Overhead Power Lines: Used for the termination and tensioning at angle points for both bare and insulated conductors, accommodating a wide range of specifications from low-voltage rural grids to high-voltage transmission lines.
Communication Optical Cable Lines: Provides tension anchoring for ADSS and OPGW optical cables, protecting them from damage in environments characterized by long spans or strong winds.
Specialized Engineering Conditions: Through customized preforming specifications, these clamps can be perfectly adapted to meet the unique demands of projects involving long-span lines in mountainous terrain, lines located in coastal regions prone to salt fog corrosion, and line retrofits in areas subject to severe wind-induced vibration.

For power engineering contractors and international trade clients, selecting a reliable preformed tension clamp is more than just choosing a product; it is about establishing the first line of defense to ensure the long-term, safe operation of the overhead line.