采用管螺纹联接。
This is the dope for drill pipe thread.
这是钻杆丝扣油，不能用在钻铤丝扣上。
The program is to process all kinds of oil well pipe thread and casing coupling.
该项目是加工各类油井管螺纹、套管接箍的机械加工项目。
Joints should be installed on the pipe thread wrapped with the appropriate raw material to ensure the reliability of sealing.
接头安装时管螺纹上应缠绕适当的生料带，以确保其密封的可靠性。
According to connection method classification (1) threaded connection valves: valve with internal thread or external thread, and pipe thread connection.
按连接方法分类(1)螺纹连接阀门：阀体带有内螺纹或外螺纹，与管道螺纹连接。
We can solve the inconvenience in eddy current flaw detector such as detection of circular workpiece, pipe thread and so on.
解决传统涡流探伤仪在管材螺纹等环形工件检测的不便。
It is a precondition and base of improving anti-galling performance of oil well pipe to make sure the leading influencing factor of API pipe thread gluing.
科学地确定出油井管螺纹粘扣的主要影响因素是提高油井管抗粘扣性能的前提和基础。
Not just an added reinforcing ring, this unique pre-compression design compensates for expansion forces generated from normal tapered pipe thread joint make-up.
不仅仅增加了加固环，这种独特的预压缩结构能够抵消常规锥形管道螺纹连接结构所会产生的膨胀力。
This paper made full use of machine vision's characteristics of non-contact, high efficiency and high precision, and develop an instrument for on-line measuring parameter of oil pipe thread.
本文利用机器视觉非接触式、高效、高精度的特点，开发出基于机器视觉的石油管螺纹参数在线测量系统。
管螺纹密封带；
Pipe Thread Specification itself with old English system has unreasonable factors.
旧英制管螺纹标准本身存在不合理因素。
Pipe Thread Specification itself with old English system has unreasonable factors.
旧英制管螺纹标准本身存在不合理因素。
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