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- tension proof drilling rod 抗拉钻杆
- Integral Short Drill Rod Type DZ. 型整体式短钻杆。
- Its characteristics are corrosion proof, tension proof, undeformed, flame resisting, easy cleaning, aging resisting, breath freely and translucidus. 其主要特点为耐腐蚀、抗拉力、不变型、阻燃、易清洗、耐老化、透气透光性好等优良特性。
- The rig is equipped with an upper spherical jaw holding mechanism and hexagonal drive drilling rod which can be replaced without shutdown, high efficiency, safe and reliable. 钻机配有上球卡式夹持机构并带有六方主动钻杆,可实行不停机倒杆,工作效率高,安全可靠。
- Model QW50A Air Operated Slips is a wellhead tools. Mainly used to clipping tubing and drilling rod which raise or put down at well repairing service operation. QW50A气动卡瓦是油田修井作业时，安装在井口上用于卡紧油管及类似管柱的一种工具。
- The drill rod was designed not rotative,and the piston can turn around along with the chuck fixed on the spindle,so relative rotational movement between them takes place when the lathe runs,and the centre bore drilling was effected. 由于钻杆自身不旋转,而工件被夹持在液压卡盘上随主轴一起旋转,中心孔钻相对工件产生相对旋转运动,从而实现钻削功能。
- The extension drill rod which can be used for higher capacity drill,the drill hole can be extended to sezeral meetrs, when drilling the straight hole,the core lifter can help coring. 选用加长钻杆于较大能力的钻机，可将钻孔延深至数米，钻垂直孔时，可采用取芯器配合取芯。
- Dongfang Drill Rod Factory in Yanggu County.Shandong province,one of the "hi-new technology enterprise in Shandong procince",id specialized in manufacturing various complete stone drilling tooling. 山东阳谷县东方钎具厂是生产各种配套凿岩钎具的专业生产厂，系“山东省高新技术企业”。
- The drill rig adopts hydraulic transmission way to realize the rotation,propulsion,getting up and pulling of drill,as well as adjustment and fixing of drill rod obliquity during working. 该机工作过程中钻具的旋转、推进、起拔以及钻杆倾角的调整和固定等动作全部采用液压传动方式实现;
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- The floating Rotary Head avoids abnormally wearing of drill rods' threads. 滑动式动力头，避免钻杆丝扣的非正常磨损；
- The floating trailing plates avoid abnormally wearing of drill rods' threads. 浮动式动力头拖板，避免钻杆丝扣的非正常磨损；
- Is the earliest Chinese manufacturer of the aluminium alloy cooling rods for the drill rod welding in the PTC industry. 公司以扎实的科研力量为依托，雄厚的生产实力为基础。
- The onus of proof lies with you. 你有责任提供证据。
- LOW CARBON MARTENSITE STEEL FOR ROCK DRILLING ROD 低碳马氏体钢重型凿岩钎杆的研制
- The tension between us has eased off a little. 我们之间的紧张状况已经缓和一些。
- A soldier's courage is put to the proof in battle. 士兵的勇气在战斗中得到考验。
- Relaxation exercises can free your body of tension. 放松运动可以松缓身体的紧张。
- Rotary drill rod used for coal mining roofbolter 煤矿锚杆钻机用回转钻杆
- Can you produce any proof of your date of birth? 你能出示有关你的生日日期的任何证件吗？
