Design and application of NC48 non-standard drill string threads;
NC48非标钻具螺纹设计与应用
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
auger with valve
(钻浅井用) 带阀螺旋钻具
drill ,twist, interchangeable, of base metal
可互换螺纹钻,贱金属制
drill chuck with thread adapter
螺纹联接扳手钻夹头
A small hand tool having a spiraled shank, a screw tip, and a cross handle and used for boring holes.
手钻一种小的手工工具，有螺旋尖头，带槽纹的钻身，横装的手柄，作钻孔用
Impact Analysis of Make-up Torque of Drill Connecting Thread Based on 3-D Finite Element Model
基于三维有限元模型的钻具连接螺纹上扣扭矩影响分析
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。
A large tool for boring into the earth.
土螺钻，地螺钻一种用来钻土地的大型工具
profile and thread rolling die
滚轧型材与螺纹模具
TOOL REQUIREMENT FOR M8x25 Thread
M8×25螺纹需要的工具
tical thread tool microscope
光学螺纹工具显微镜
"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
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
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
Drill pipe thread gauges
GB/T9253.9-1995石油钻杆螺纹量规
API drill pipe thread
美国石油学会标准钻杆螺纹
Longitudinal-cracking Failure Analysis of Box
φ139.7mm钻杆内螺纹接头纵向开裂失效分析