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連絡先担当者 Ms. Ann
tongju3123981177@163.com, Baoding, Hebei
DTH hammer model *5 DTH hammer model *0 DTH hammer model *0 Used for seismic drilling on mountain, hill such complicate stratum. The property and main technology parameter are as below: Parameter *7HM*5A***0 *7HM*5A***0 drill diameter φ*8mm φ*6mm working condition pressure 0.5~0.7MPa 0.5~0.7MPa gas consumption 2m3/min 2.5m3/min impulse frequency **0/min **0/min single impulse frequency 5.1kgm 7kgm measurements (d×l φ*7×**7mm φ*5×**1mm
