四牙轮钻头牙轮支架  bridge of the bit

移轴牙轮钻头  offset cone bit

镶硬合金齿的牙轮钻头  insert bit; carbide insert bit; carbide type bit

牙轮钻头钻进  roller boring; roller bit drilling

差异式独牙轮钻头  zublin differential bit

纯滚动牙轮钻头  true-rolling bit

带蹼牙轮钻头  DM bit

单牙轮钻头  one-cone bits; zublin simplex bit

定向型三牙轮钻头  directional-type tricone bit

独牙轮钻头  zublin bit

非自洁式牙轮钻头  nonself-clearing bit; non self-clearing bit

钢齿牙轮钻头  steel tooth bit; steel tooth roller cone bit

滚柱轴承锥形牙轮钻头  cone type roller bearing rock bit

密封轴承牙轮钻头  sealed bearing rock bit

盘式单牙轮钻头  disc one-cone bit

喷射式三牙轮钻头  jet type tricone bit

喷射式牙轮钻头  jet nozzled rock bit

偏心单牙轮钻头  mono-cone bit with offset

平底牙轮钻头  flat toothed bit