We, DVY INTERNATIONAL,(E-mail: , MSN:, 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).
