lefthand drill pipe

用法例句

Development of drillpipe thread defect detection apparatus;

钻杆螺纹缺陷检测装置的研制

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。

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

Analysis of Screw Thread Structure of Drilling Stem with ANSYS

基于ANSYS的钻杆螺纹结构形式分析

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

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

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

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

a round-headed bolt for timber; threaded along part of the shank; inserted into holes already drilled.

加工木料用的圆头螺栓；部分连杆有螺纹；可以插入事先钻出的孔中。

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

grout anchored deformed bar

灌浆锚定的螺纹钢杆

double pin sucker rod

两头阳螺纹的抽油杆

"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