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- The basic principle and the method of oil drill pipe end upsetting process were presented. 介绍了石油钻杆端部镦锻加厚工艺基本原理及加厚方式。
- A study on oil drill pipe end upsetting process 石油钻杆管端加厚工艺研究
- Analysis of Cracking of Oil Drill Pipe 石油钻杆裂纹分析
- Chain transfer for oil drill pipe 石油钻杆传送链条
- grade G105 steel for oil drill pipe 石油钻杆用G105级钢
- Design and Testing of Technological Process for End-upsetting of Oil Drill Pipe 石油钻杆管端加厚工艺过程设计与试验
- The drill pipe that was broken has been found. 断了的钻杆被找到了。
- Drill pipe threads are not cleaned in that way. 钻杆丝扣不是那样清洗的。
- The right thing to do now is to bent a drill pipe. 现在要做的事是拉弯一根钻杆。
- Make up 15 joints of 5" HW Drill pipe. 接上15根5"加重钻杆。
- Specification of Oil Drill Pipe 石油钻杆规格
- Brake pin of oil drill had fractured in procession of work. 石油钻机刹车盘销轴在工作过程中断裂。
- oil drill pipe 石油钻杆
- Drill pipe corrosion results from oxygen acting on metals. 钻杆的腐蚀来自氧对金属的作用。
- Petroleum and natural gas industries - Aluminium alloy drill pipe. 石油天然气工业-铝合金钻杆。
- The stand pipe pressure (drill pipe pressure) is 10kg/cm2. 立管压力（钻杆压力）10公斤/厘米2。
- Oil drilling can result in harmful spillage. 钻井会造成有害物质的溢出；
- Must these drill pipes be measured again? 这些钻杆必须再量一次吗?
- No defects did we find in these drill pipes. 在这些钻杆内我们没有发现缺陷。
- The initial gushing of oil out of a drill pipe is caused by the pressure of the gas trapped and compressed immediately above the oil deposits. 最初石油喷出钻管，是由于受到紧压在石油层上的被密封的气体的压力。
