... all IADC codes suitable for sidetracking, deep well drilling Advantage: 1> TCI tricone bit, steel teeth tricone bit,rock bit,milled tooth bit,tci bit,steel tooth bit2 ... seizure resistance of the bearing are improved. Compared with three cone bit, the leg bearing is bigger, so it can receive higher ... , 527, 537, 6175 7/8149.2517, 527, 537, 6176152.4517 TCI single cone bit for hole boring