High-Strength Hot-Dip Galvanized Anti-Twist Steel Pilot Wire for Conductor Stringing

The steel pilot wire used for conductor stringing is a high-strength, anti-twist wire rope specifically designed for the construction of overhead transmission and distribution lines. Serving as a critical intermediate pulling medium, it enables the safe and efficient pulling of heavy conductors, OPGW, ADSS fiber optic cables, and ground wires across tower spans.

Definition: A wire rope (typically hot-dip galvanized) manufactured using a special braiding process; it features an anti-rotation structural design that eliminates twisting under load.

Core Function: Acts as a "pilot wire" in multi-stage stringing operations. It is first strung across the span and subsequently used to pull a heavier pulling rope, which in turn pulls the final conductor. This staged approach ensures safety and controllability during heavy-load pulling operations.

• Anti-twist (Anti-rotation) Properties: A unique braided structure (such as a 12-strand or 6-strand square braid) counteracts internal torque, preventing kinking or twisting and ensuring smooth pulling operations.
• Ultra-high Strength: Manufactured using high-tensile-strength steel wire (1770-1960 MPa), it offers extremely high breaking strength (100-600 kN), capable of supporting the weight of heavy conductors.
• Excellent Flexibility: Balances high strength with flexibility, making it easy to handle, coil, and pass through pulley blocks.
• Corrosion Resistance: A hot-dip galvanized coating provides long-lasting rust protection, making it suitable for outdoor use and harsh environments.
• Durability: Even load distribution among the wire strands extends service life and reduces maintenance requirements.

The most common design is an anti-twist braided rope with a symmetrical cross-section, utilizing a combination of left-hand and right-hand lay strands to counteract torque.

12×19W (12 strands, with each strand featuring a 1×19 Warrington construction): An industry-standard configuration that achieves an optimal balance between strength, flexibility, and anti-twist performance.

18-strand and 24-strand: Suitable for ultra-heavy-duty applications (such as 500 kV and higher voltage transmission lines), meeting requirements for extremely high breaking loads.