DTH hammer model 75
DTH hammer model 80
DTH hammer model 90
Used for seismic drilling on mountain, hill such complicate stratum.
The property and main technology parameter are as below:
Parameter 07HM65A2000 07HM75A2000
drill diameter φ68mm φ76mm
working condition pressure 0.5~0.7MPa 0.5~0.7MPa
gas consumption 2m3/min 2.5m3/min
impulse frequency 810/min 810/min
single impulse frequency 5.1kgm 7kgm
