1. Full hydraulic drive, steel crawlers, assembly type mast, the
drilling rig is integrated and compact for easy operation in
structure consisting of power station, main hoist, wire line winch
and mud pump.
2. DF-H-4 core drilling rig adopts dual pump and motor and
closed-loop hydraulic circuits for drive head rotation. It is
controlled by electro-hydraulic proportional integratedly and
3. It is suitable to use in plains, hills, high temperature as well
as low temperature places.4. It is wire-line coring, and at the same time has the unique top
drive function. The maximum torque is 7200 N.M, which will be much
more suitable for large diameter drilling in coal bed methane,
hydrology and water well.
5. According to many years of experience in HDD field,our engineers
install clamp and shackle device on the rig to relieve labor
intensity, improve drilling efficiency and guarantee operator's
6. Excellent in performance,high in working efficiency, easy for
operation and keep the operators from dangers.