oil well tricone bit, oil well tricone bit Suppliers and ...
14 3/4' (374.6mm) IADC537G Oil well tricone bit water well tricone drill bit HDD tricone drill head ... api 9 7/8 IADC537 high quality oil rig drill head/oil well drilling tricone bit. ... of which mining machinery parts accounts for 58%, drill bit accounts for 5%.
Get Price