borehole down the hole drill rig

Tci Tricone Three Cone Rock Roller Drill Bit For Oil Rig And Mining API oil rig drilling rock bits 60mm,65mm,76mm,93mm,95mm,98mm(3 7/8),101.6mm,114mm,118mm,120mm,127mm(5) 130.1mm(5 1/8),133.3mm(5 1/4),139.7mm(5 1/2),142.8mm(5 5/8),149.2mm(5 7/8) 152.4mm(6),155.5mm(6 1/8),158.7mm(6 1/4),161.9mm(6 3/8),165.1mm(6 1/2) 190.5mm(7 1/2),193.6mm(7 5/8),200.0mm(7 7/8) 212.7mm(8 3/8),215.9mm(8 1/2),222.2mm8 3/4) 241.3(9 1/2),244.4(9 5/8),250.8(9 7/8) 269.8(10 5/8)

Face Design Hammer bits are offered in three basic face designs: concave, convex, and flat face. Each are designed for specific applications and conditions and for varying rock types and hardness Concave is an excellent all around face design and is used as a general-purpose bit for most conditions while drilling a very straight hole. Convex bits are used for a combination of speed and service life. Having 2 gage rows, they are also suited for hard, abrasive rock. Flat face

8 1/2" IADC Code 537 617 437 Tri-Cone Hard Rock Roller Tricone Drill Bit For Granite Non-sealed Roller Air Bearing Mining Roller Cone Bits This series bits are non-sealed Roller Bearing bits that are cooled and cleaned by air with fast drilling speed and good strength which are used for the development of open-pit coal mines, iron mines, and non-ferrous metal mines. The thrust bearing is made of materials with high wear resistance, high hardness, and high temperature

dth bit DHD Mission Numa CIR90-100 water well dth bit 3 Inch High Air Pressure 150mm 200mm Blast Hole Drilling Bit DTH Hammer Button Bits For Core Drilling Rig The DTH Bits for Hammers are manufactured according to the best quality standards using high quality Steel grade in order to guarantee maximum performance. Our Bits are used for Constructio, Water well drilling, Geothermal Drilling, Micropiles, Quarry and Mining field. Concave Face DTH Bit For medium soft to medium