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- Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling. 气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
- 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。
- And returns to the surface in the space between the drill pipe and the wall of the borehole. 然后通过钻杆和钻孔壁之间的间隙返回至地表。
- The main products are:Slick Drill Collar,Spiral Drill Collar,Nonmagnetic Drill Collar,Heavy Weight Drill Pipe,square and hexagonal Kelly. 并可承接特殊规格的石油钻具产品的生产。
- Drill pipe corrosion results from oxygen acting on metals. 钻杆的腐蚀来自氧对金属的作用。
- Heavy wall, translucent Buchner flasks, suitable for use under vacuum. 为半透明之厚壁过滤锥形瓶。
- 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。
- 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 modern high performance pipeline steel has been developing for high strength,heavy wall,high deformability and HIC-resistance. 现代管线钢向高强度、大厚度、抗应变和抗HIC方向发展。
- If the drill pipe threads become rusty, rust will have to be cleaned. 如果钻杆丝扣生锈,必须清除掉。
- The heavier mud travels down the drill pipe and up through the annulus. 较重的泥浆沿钻杆向下流动,然后通过环形间隙上升。
- WH1325ATC machine frame is constructed of heavy wall, the feame components are stress relieved prior to machining to insure parallelism and perpendicularity of the final product. WH1325ATC机器床身和横梁均由厚壁钢管焊接而成，去应力处理后在大型龙门加工中心一次装夹完成全部安全面的加工。确保机床的平行度和垂直度，为机床提供了一个刚硬稳定的平台。
- CASTON is one of the enterprises for drill pipe production in China. 凯司通公司是国内最早从事钻杆生产的企业之一。
- Designed for wall drilling of concrete block or brick without using water. 在无水环境下，适用于混凝土或者砖块上钻孔取样。
- This is the dope for drill pipe thread. It can't be used for drill collar. 这是钻杆丝扣油,不能用在钻铤丝扣上。
