Button bit, cross bit, chisel bit, diamond core bit and reaming shell
 

We, DVY INTERNATIONAL (E-mail: ,
, website: http://www.sinodrills.com,) are one
famous specialized supplier and exporter for those rock drilling
equipments, as following,
--DTH (down the hole) hammers and bits & ODEX;
--Diamond core drilling tools: 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 adaptors, extension rod, drifter rod, paving rod, pick rod,
coupling sleeves, M/F speed rod, roller bit, rock bit, quarrying, and
mining equipments;
--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.