12 Inch Rock Drilling Hammer Fatigue Resistant Tearproof With Standard ASTM
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CN125A ( NUMA125 ) Big Size DTH Hammer for mining Advantages: 1.Out of the throuble of foot valve fracture and expansion and contraction. 2.Lower energy consumption and higher impact frequency.The drilling speed is 15%-30% higher than the one with foot ......
Changsha Chaojingang Machinery Manufacturing Co., Ltd.
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