KE Series Elastomer sealed Bearing Steel tooth drill bit 橡胶密封钢齿三牙轮钻头

miled tooth tricone bit
IADCWOB (KN/mm)RPM(rimin)Applicable formations 
KE 1140.3-0.75180-60very soft formation :clay ,mudstone ,chalk…
KE 1150.3-0.75180-60
KE 1170.3-0.75180-60
KE1240.3-0.85180-60soft formation :
such as mudstone ,gypsum,slat , soft limestone..
KE1250.3-0.85180-60
KE1270.3-0.85180-60
KE1340.3-0.95150-60soft to medium formation:
soft shale,medium soft limestone,
KE1360.3-0.95150-60
KE2140.35-0.95150-60medium formation:
such as  medium soft  shale ,hard gypsum 
KE2150.35-0.95150-60
KE2170.35-0.95150-60
KE2270.35-0.95150-50medium hard formation :
abrasive shale,limestone ,sand stone ,dolomite
hard gypsum,marble 
KE2250.35-0.95150-50