■ Features
1.Powerful
2.Top-drive head driven by hydraulic, stepless speed regulation, high efficiency and low labor intensity
3.Variable hydraulic system with load feedback, low energy consumption
4.First use special valve fixed position by friction, satiable for jet grouting technic
5.Top-drive head has wide range of rotary speed, meet varying layer and drilling technology
6.With track chassis, easy and speedy to move
7.With rotary support
8.Longer stroke of top-drive head, reduce auxiliary operation time
9.Compact structure, centralized operation, easy and safety
10.With display unit for verticality of derrick, rotaring of top-drive head and lift speed