钻杆接头的各种纵向开裂属于低应力脆性断裂。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
给大钳装上与钻杆接头或钻铤相匹配的钳头,再装上安全锁簧。
Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
本文对国产的和从西德、法国和巴西进口的钻杆接头作了解剖分析。
The mechanical and metallurgical properties of tool joints made in West Germany, France, Brazil and China are thoroughly studied.
应用推荐