hard banding of tool joint
钻杆接头表面加硬圈
hard facing of tool joint
钻杆接头表面加硬层
shoulder dressing tool
钻杆接头端面整形工具
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
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
Defects Analysis on 37CrMnMo4 Drill Pipe Joints
37CrMnMo4钻杆接头缺陷分析
Study on Surface Nanocrystallization of 7A52 Superhard Aluminum Alloy Welded Joint
7A52超硬铝合金焊接接头表面纳米化的试验研究
Threads on rotary shouldered connections for petroleum industry
GB/T9253.1-1999石油钻杆接头螺纹
Petroleum equipment--Thread gages for rotary shouldered connections
GB/T4749-1993石油钻杆接头螺纹量规
Longitudinal-cracking Failure Analysis of Box
φ139.7mm钻杆内螺纹接头纵向开裂失效分析
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
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
tool joint hard band
工具接头的硬合金抗磨圈
Analysis of characteristics of PDC rock bits applied to the hard rock
适用于硬岩的PDC全面钻头特点分析
Machining quality is usually not a problem with the sealing surfaces of outlet connections, but it may impact the threads. This is especially true for the harder materials of construction.
排气口接头的密封表面的加工质量通常不是问题，但它会影响螺纹。对于较硬的建材更是如此。
As the bit drills down, pipe is added length after length .
随着钻头往下钻，管子一段一段地加接上去。
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
tapped coil
多(接)头线圈, 抽头线圈