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1.
A study of the surface crack at thread root of tool joint pins by the aid of finite element method.
石油钻杆公接头螺纹牙根部表面裂纹有限元计算
2.
hard banding of tool joint
钻杆接头表面加硬圈
3.
hard facing of tool joint
钻杆接头表面加硬层
4.
shoulder dressing tool
钻杆接头端面整形工具
5.
Defects Analysis on 37CrMnMo4 Drill Pipe Joints
37CrMnMo4钻杆接头缺陷分析
6.
Threads on rotary shouldered connections for petroleum industry
GB/T9253.1-1999石油钻杆接头螺纹
7.
Petroleum equipment--Thread gages for rotary shouldered connections
GB/T4749-1993石油钻杆接头螺纹量规
8.
Longitudinal-cracking Failure Analysis of Box
φ139.7mm钻杆内螺纹接头纵向开裂失效分析
9.
Cause Analyses of Pin Joint Fracture of 139.7 mm Heavy Weight Drill Pipe
139.7mm加重钻杆外螺纹接头断裂原因分析
10.
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
11.
Finite element analysis of the screw structure of the drill-stem junction
钻杆接头螺纹结构形式的有限元分析
12.
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
13.
Study on the Application of Plasma Arc Powder Repair Welding in Restoring Petroleum Drill Stem Joint;
等离子弧粉末堆焊在石油钻杆接头修复中的应用研究
14.
Research on Controlled System of Heat-treatment of Drill Pipe Joint after Friction Welding Which is Based on PLC Technology;
石油钻杆摩擦焊接头焊后感应热处理PLC闭环控制系统研究
15.
Study on Dry Biological Properties of Drilling Pipe Joint Material with 35CrMo Sulphurized-nitrided Compound Layer
钻杆接头材料35CrMo硫氮复合处理层的干摩擦学性能研究
16.
tools to tubing substitute
钻具连接油管的接头
17.
tool joint for well-drilling machines
工具接头,钻井机用
18.
drill chuck with thread adapter
螺纹联接扳手钻夹头