We, DVY INTERNATIONAL,(E-mail: ,
, website: http://www.sinodrills.com)are one
supplier, specializing in exporting those rock drilling equipments, as
following,
--DTH (down the hole) hammers and bits & ODEX, pilot bit, guide
sleeves, guide device;
--Diamond core drilling tools (NQ, BQ, HQ, PQ): diamond core bits,
reaming shells/reamer, reaming tools, core barrel, casing shoe;
--Top hammer drilling equipment: button bit, chisel bit, cross bit,
tapered bit, thread bit, integral drill rod, tapered rod, striking bar,
shank adapters, extension rod, drifter rod, paving rod, pick rod,
coupling sleeves, M/F speed rod, roller bit, rock bit, quarrying, and
mining equipments, hollow drill steel;
--Rock anchor drilling tools: anchor rods, anchor bits, friction bolts;
Furnace tapping tools: furnace rods, furnace bits;
--Rock drills: air-leg (jack-leg) rock drill, pneumatic rock drills,
hand-held rock drill, internal combustion rock drill, motor-driven rock
drill, open cast, open pit, surface and underground mining/quarrying,
pick hammer tools, tunnelling equipment ;
--Drag bits: 3-wings, 4-wings, step type and V-type;
--Mine lamp (helmet lamps).

wrote in message
mining equipments, hollow drill steel;
--Rock anchor drilling tools: anchor rods, anchor bits, friction bolts;

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