1.
Study on Influencing Factors of S135 Drill Pipe Steel Oxygen Corrosion and Corrosion Fatigue;
S135钻杆钢氧腐蚀和腐蚀疲劳影响因素的研究
2.
Hydrogen Permeation and Hydrogen Induced Cracking of Drill Pipe Steel S135
石油用S135钻杆钢氢渗透与氢致滞后开裂行为
3.
The bit was attached to a heavy length of steel suspended by a wire rope.
钻头系在由钢丝绳悬挂起来的加重杆上。
4.
On Substitution of the Butt Welding between 35-steel for the Butt Welding of 16Mn and 35-Steel in the Connection of Drilling Pipe and Flange;
35钢代替16Mn用于钻杆管与法兰盘的对焊
5.
Tribological Properties of Sulfur-nitrade Layer on Drilling Joint Material 35CrMo Steel
钻杆接头材料35CrMo钢硫氮共渗层的摩擦学性能
6.
Investigation on Elements Responsible for Development of External Surface Cracks of Drill Pipe Body in Steel X95
X95钢级钻杆管体外表面裂纹形成原因分析
7.
Research on the mathematical mode of flow stress of grade G105 steel for oil drill pipe
石油钻杆用G105级钢高温塑性流变应力数学模型
8.
Research on H_2S Corrosive Operation Condition for Drill Pipe in G105 Steel
G105钢级钻杆在含有H_2S环境下的腐蚀研究
9.
The high seam drill2000 is stainless steel construction and the cylinder rods of the1 st inner legs of the stinger and drill leg are stainless steel.
此厚煤层钻2000为不锈钢结构，且刺和钻支架的一级内支架所属的活塞杆也是不锈钢的。
10.
great lengths of drill pipe which are rotated by an engine at the top,
钻杆顶部安装的发动机带动钻杆旋转，
11.
FABRICATION TECHNOLOGY OF STEEL GIRDER MANUFACTURE OF NANJING DASHENGGUAN YANGZE RIVER BRIDGE:LAY-OUTING AND DRILLING FOR THE WHOLE NODE AND MEMBER OF THE MAIN ARCH
南京大胜关长江大桥钢梁制作技术——主拱整体节点杆件划线与钻孔工艺
12.
hard banding of tool joint
钻杆接头表面加硬圈
13.
Ingersoll-Rand jumbo column
英格索尔－兰德钻车托杆
14.
stacking capacity of derrick
井架的钻杆立根容量
15.
plain clinometer
钻杆下部装的测斜仪
16.
hard facing of tool joint
钻杆接头表面加硬层
17.
engine ,drill, dental, with swivel arm
牙科钻机,带旋转杆
18.
shoulder dressing tool
钻杆接头端面整形工具