1.
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
2.
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
3.
Failure Analysis of φ127.0 mm×9.19 mm G105 Drill Pipe
φ127.0 mm×9.19 mm G105钻杆失效分析
4.
Failure Analysis of φ127 mm G105 Punched Drilling Pipe
φ127 mm G105钻杆管体刺穿失效分析
5.
Failure Analysis on Tool Joint Expansion of φ88.9mm×9.35mm G105 Drill Pipe
φ88.9mm×9.35mm G105钻杆内螺纹接头胀扣失效分析
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.
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。
8.
Collapse Test Research on Baosteel-made Ф139.7 mm×7.72 mm P110 Casing for Well-drilling Service
宝钢Ф139.7mm×7.72mm P110钢级钻井用套管挤毁试验研究
9.
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。
10.
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
11.
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
12.
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
13.
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
14.
The Study of Corrosion Mechanism of G105 Steel in Various NaCl Solution and Selection of Corrosion Inhibitor;
充气条件下G105钢在NaCl溶液中腐蚀规律和防护措施的研究
15.
Ultrasonic Nondestructive Characterization of Steel for D Grade Sucker Rod;
D级抽油杆用钢的超声无损表征初探
16.
Study and production practice of Q345E steel for driven well floor structure
钻井平台结构用E级H型钢的研究及生产实践
17.
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，
18.
Cucurbited handle awl: With classy wood handle,the needles are made of top quality steel, and looks smoothly pretty and durability.
葫芦型木柄定位钻：高级木柄，针体选用优质钢材，光滑美观耐用。