司钻要确保所有的仪表和传感器，如指重仪、扭距表，要经过检查和校验。
The Driller shall ensure that all gauges and sensors, such as the weight indicator, torque gauge, are inspected and calibrated.
通常普通麻花钻的螺旋槽加工有三种方式：切削加工、扭制加工和磨削加工。
Usually there are three methods can be used to machine the spiral flute of twist drill, such as cutting, torsion, grinding.
司钻操作液压猫头，液压缸伸出，拉紧猫头绳，扭距仪将显示出当前的拉力。
The Driller now operates the EZY-Torque. The hydraulic cylinder slides out (up), causing the jack line to be pulled by the rig tong. The torque meter will indicate the torque line pull force.
安全防盗锁具有防钻、防扭、防锯撬功能，以及互开率极低的优点。
The safety lock is drilling twist and picking resistant and is scarcely opened by other key.
双台肩钻具接头可大幅度提高钻具的抗扭强度。
The torsional strength of the drilling tools can be greatly increased by using the double shoulder tool joint.
4英寸）钻铤NC35螺纹加工LE螺纹、应力槽、双台肩后进行了实物抗扭性能试验，证实双台肩钻铤具有很好的抗扭性能。
After processing LET thread, stress groove and double shoulder connection for the NC35 thread of Drill Collar in 43/4 inch, torsion tests were done.
钢结构系列：钢结构用高强度大六角头螺栓，扭剪型螺栓连接副，钢网架球节点用高强度螺栓，焊钉，钻尾丝等。
Steel Series: steel with high strength large hexagon head bolts, torsion shear bolt connections made, the steel truss joints of high strength bolts, studs, drill the end of wire.
钢结构系列：钢结构用高强度大六角头螺栓，扭剪型螺栓连接副，钢网架球节点用高强度螺栓，焊钉，钻尾丝等。
Steel Series: steel with high strength large hexagon head bolts, torsion shear bolt connections made, the steel truss joints of high strength bolts, studs, drill the end of wire.
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