1.
drill ,twist, interchangeable, of base metal
可互换螺纹钻,贱金属制
2.
drill chuck with thread adapter
螺纹联接扳手钻夹头
3.
Secondly there is error between thethread roll angles of thread rolling die and drill rod.
滚丝轮螺纹和钻杆螺纹的螺旋角有误差。
4.
"Drill & tap for M16X2-1.38 Deep NPT,16 places for cover plate mounting screw"
钻孔,攻出一只M16X2-1.38深NPT螺纹,16处,该螺纹应与盖板固定螺丝配套
5.
Discussion on the Design of Drilling String Thread for Complex Drilling Conditions
适应复杂钻探条件的钻探螺纹设计探讨
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.
Drill pipe thread gauges
GB/T9253.9-1995石油钻杆螺纹量规
9.
API drill pipe thread
美国石油学会标准钻杆螺纹
10.
Longitudinal-cracking Failure Analysis of Box
φ139.7mm钻杆内螺纹接头纵向开裂失效分析
11.
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
12.
Analysis of Screw Thread Structure of Drilling Stem with ANSYS
基于ANSYS的钻杆螺纹结构形式分析
13.
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
14.
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
15.
The endurance crack is apt to be produced in collar thread during drilling, which eventually results in the connection failure.
在钻井过程中,钻铤螺纹容易产生疲劳裂纹,最终导致连接失效。
16.
Design of Screw Thread for Drill Collar of High Torque Connections and Finite Element Analysis
高抗扭强度钻铤螺纹设计及有限元分析
17.
Failture Analysis of Drilling Collar Thread Connections and Structure Optimization
钻铤连接螺纹断裂失效分析及结构优化
18.
APPLICATION OF PHOSPHATED FLUID TREATMENT TECHNOLOGY FOR DRILLING TOOL THREADS PROTECTION
磷化液处理技术在钻具螺纹防护中的应用