Sign In | Join Free | My qualitytoyschina.com |
|
200mm Gold Roller Cone Bit 80-40RPM Rotary Speed 7 7/8" With 4 1/2" API Reg Pin Basical Parameter Bit Size 7 7/8"(200MM) IADC Code 537G Connection 4 1/2"API reg pin Nozzle Qty 3NZ Make up Torque(KN.m...