|BrandJinquan||Valid until2015-12-31 [Expired]||Latest update2015-03-17 21:16|
Down The Hole DTH Hammers
Jinquan is one of the leading manufacturers & suppliers of DTH drilling tools from
Size range 3'', 3.5'', 4'', 5'', 6'', 8'', 10'', 12'', 14" etc.
Shank styles: DHD3.5, DHD340, DHD350, DHD360, DHD380; COP44, COP54, COP64, COP84; TD40, QL50, QL60, QL80; Mission40, Mission50, Mission60, Mission80; SD4, SD5, SD6, SD8; DHD112, SD12, NUMA125 etc.
1. Out of the trouble 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 valve.
3. Simple structure, reliable parts, long life, easy and cheap maintenance.
4. Lower air and oil consumption. The oil consumption is