China HD45A DTH Hammer (Cop 44, DHD340A)
It is a kind of high air pressure HD45A DTH hammer without footvalve, our newest design. It is also one of the most advanced DHD340 DTH hammer in the world. Our COP44 DTH hammer has the following advantages: 1. Out of the trouble of foot valve fracture and expansion and contraction. 2. Lower energy consumption and higher impact frequency.
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