• Creating full-tension splices and dead-end connections on large-diameter ACSR, AAC, or AAAC conductors requires precise hydraulic compression forces to cold-weld the inner steel core sleeve and outer aluminum sleeve into a unified electrical and mechanical joint.

Selection guidelines for high-tonnage compression tools include:

• 100-Ton to 200-Ton Hydraulic Compression Heads: Required for Extra High Voltage (EHV) conductors (such as Drake, Cardinal, Falcon, or multi-bundle UHV conductors) where sleeve wall thickness demands massive compressive force.

• Precision Hexagonal Dies: Dies must match the exact outer diameter of the steel and aluminum crimp sleeves. Hexagonal compression provides $360^\circ$ uniform perimeter pressure, ensuring maximum mechanical tensile resistance (reaching $\ge 95\%$ of conductor rated breaking strength) and low electrical contact resistance.

• Double-Acting Hydraulic Electric/Engine Pumps: Double-acting cylinders ensure rapid piston advance and motorized retraction, speeding up high-altitude tower jointing operations.

Ningbo Changshi produces portable ultra-high-pressure hydraulic compression tools (ranging from 60T to 200T) equipped with interchangeable hexagonal die sets, ultra-flexible high-pressure hoses, and light-weight alloy frames engineered for tower and ground operations.