China drilling tools Bit Face designs
China drilling tools Bit Face designs Aug 29, 2019 BIT FACE DESIGNS BR - Button Recessed “Drop Center” face characteristic • Reduced hole deviation • Broken ground conditions BF - Button Flat “Flat” face characteristic • General purpose bit • Hard to medium conditions BC - Button Chisel Chisel shape characteristic • Abrasive conditions • Fast penetration BD - Button Dome • Clearly defined raised face profiles • Primary reaming applications in soft ground