... is all-hydraulic operated drill accordance with the requirements of subway, high-rise building, airport and the ... 1.2 Jet-grouting. It can be used in single-pipe, double-pipe and triple-pipe jet-grouting, ... stratum, we can adjust torque and rotary speed of drilling rig to increase drilling rigs adaptability. At ... (mm):Φ89,Φ102,Φ114Rod Angle (°):900Output Rotary Speed of Power Head (r/min):6,12,24,30, ...