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1)  sub-coupling
变径接箍
2)  reducing coupling
异径接箍
3)  reducing pipe coupling
异径管箍;异径管接头
4)  changeable diameter joint
变径接头
1.
By analyzing the accidents caused by welding quality of three kinds of changeable diameter joint, this article indicates it is due to stress focus and stress rot coming with it.
通过对 3种变径接头上破裂事故的典型实例分析 ,指出其事故根源均因应力集中和伴随的应力腐蚀所致 ,只要降低或消除变径接头的应力集中系数 ,在焊接质量合格的条件下 ,即可杜绝此类事故的发
5)  coupling [英]['kʌplɪŋ]  [美]['kʌplɪŋ]
接箍
1.
A comprehensive analysis on the corrosion of heat-insulated tubing coupling;
隔热管接箍腐蚀综合分析
2.
Analysis of Surface Corrosion of N80 Heat Insulation Oil Pipe Couplings;
N80隔热油管接箍表面腐蚀原因分析
3.
Tests and Analysis of Reduction of Coupling OD VS Tubing Anti- slippage Strength;
缩小接箍外径对油管抗滑脱强度影响的试验分析
6)  collar [英]['kɔlə(r)]  [美]['kɑlɚ]
接箍
1.
Test of resistance in viscous fluid for the collar of wire rope sucker rod;
钢丝绳抽油杆接箍在粘性流体中的阻尼试验
2.
It can detect the casing collar automatically and display the up-data between the standard casing collar and the shooting sport, which is very useful to perforation services.
它既可以独立地工作,也可与测井地面系统的主计算机通过并行口进行通讯,并具有适应射孔服务所需的接箍自动检测功能和上提量显示功能等,因而它可以适用于各种测井条件,且与计算机接口方便。
3.
In order to solve the problem of thread gluing of the tubing,Henan Oilfield Machinery Manufacture Factory performs the quenching treatment of tubing and collar surfaces by means of laser surface thermal treatment.
为解决油田现场使用油管时出现的螺纹粘连问题,河南油田机械制造厂利用激光表面热处理技术对油管和接箍表面进行淬火处理。
补充资料:异径管
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性质:又称大小头。化工管件之一,用于两种不同管径的联接(参见管件)。

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