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- Keywords drill rod joint;surface hardening;wearing resistance;boriding; 钻杆接头;表面硬化;耐磨性;渗硼;
- Effect of Surface Hardness with Nitrogen Ion Doping for Drill Rod Joint Material 氮离子注入对钻杆接头材料表面硬度的影响
- Theoretical Computation, Measurement and Analysis of Tran sfer Characteristics of Impact Energy Through Drill Rod Joint 冲击能在钎杆接头处传播的理论计算及测试分析
- Analysis on Surface Cracking of Petroleum Drilling Rod Joint 石油钻杆接头表面开裂原因分析
- drill rod joint 钻杆接头
- Integral Short Drill Rod Type DZ. 型整体式短钻杆。
- 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;
- 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 corrosion resistant plate penstock is in the frame of obvious-stem, which mainly consists of lifting device, frame, gate plate, seal, wedge block compressing set, rod and rod joint, rod guide tube, install accessory and etc. 不锈钢闸门为明杆式结构，主要由启闭装置、闸框、闸板、密封件、楔块压紧装置、门杆和杆接头、杆导架、安装附件等组成。
- 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；
- Most products we produce are key components for automobiles,such as:shperical hinge,nutted rod joint,ballandspigot,knuckle,connecting,rod,sliding york,flang fork,and some other products. 我们所生产的主要产品是汽车上的关键件，主要产品有：球铰链接头，拉杆接头，球销，转向节，连杆，滑动叉等以及其它产品。
- 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。
- Rotary drill rod used for coal mining roofbolter 煤矿锚杆钻机用回转钻杆
- Shape and dimension of shank for drill rod 凿岩机导杆形状及尺寸
- 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。
- The delays put the whole schedule out of joint. 一再的拖延打乱了全部安排。
- 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”。
