The connection strength increases with the increasing of bearizing rate of coupler and thickness of pipe wall, but decreases with the increasing of connection length.
管接头的连接强度随着扩孔率、管壁厚度的增加而升高，但随着连接长度的增大而降低；
Unless otherwise specified, all Pacific valves will be supplied with butt weld ends conforming to ANSI B16.25 either Fig. 2(b) or 3(b) depending on the nominal pipe wall thickness of the valve wall.
除非另外指定，所有美国太平洋阀门都配置符合ANSI B16.25标准的对焊连接端口，并根据阀门壁厚和管道壁厚确定是属于型号2（b）或3（b）。
It shows that pipe bending by using induction heating applied a counter torque can efficiently reduce the thinning ratio of pipe wall thickness.
计算结果表明：在转臂上施加一定的反向弯矩，能有效减小弯管的壁厚减薄率。
The wall thickness of metal corrugated pipe is very thin, that is the weakest link in the piping system.
金属波纹管的壁厚很薄，它是管道系统中的薄弱环节。
The simulation and practical results show that the titanium thin pipe of a uniform wall thickness, equal strength and light weight is achieved by using the above optimized parameters.
模拟和实际结果表明，采用上述参数可获得壁厚均匀，等强度，轻重量的薄壁钛环形管。
The adaptive feedforward control technology, which is implemented in the stretch reducing process of seamless pipe wall thickness at Baosteel Tubing Plant, is introduced.
介绍了宝钢分公司钢管厂在无缝钢管张减过程壁厚控制中实现的前馈自适应控制技术。
Pipe sinking drawing is analysed using continuous speed field and the equations of wall thickness variations in sinking drawing established.
利用连续速度场分析了圆管空拔过程，建立了空拔壁厚变化量计算式。
Online Flattener is main equipment of welded pipe unit, the property of Flattener is very important to ensure production of welded pipe with larger wall thickness going well.
焊管机组在线矫平机是焊管生产线的主要设备之一，为了确保高强度、大直径、厚壁焊管生产的顺利进行，矫平机的性能十分重要。
Researches show that the pipe wall thickness deflection occurred during the pipe manufacturing could influence the intensity of the casings to some extent.
研究表明在石油套管的生产过程中产生的壁厚误差会在一定程度上影响套管的强度。
A sensor which is applicable to test thickness of gas pipe wall based on electromagnetic flux leakage method is proposed.
提出了一种基于电磁式漏磁检测原理的传感器，用于煤气管道壁厚检测。
In the case of suspected corrosion of heat exchangers and pipe wall thickness.
在怀疑有锈蚀的情况下对换热器及管道的壁厚进行检查。
In the evaluation of steel pipe quality, the pipe appearance, the weld appearance, the pipe wall thickness, the defect types and sizes, and the pipe materials are selected as the evaluation factors.
在钢管质量评价过程中，选取了钢管外观、焊缝外观、管道壁厚、缺陷种类及尺寸、管道材料作为评价因素集。
The prepared core pipe with 75mm to 360mm of inside diameter and 7mm to 30mm of wall thickness can replace various paper core pipes, thereby having a wide popularization and application prospect.
用其制备成的内径75～360毫米、壁厚7～30毫米的芯管，可以取代现有各种纸质芯管，具有广泛推广应用前景。
The simulation and practical results show that the titanium thin pipe of a uniform wall thickness, equal strength and lig...
模拟和实际结果表明，采用上述参数可获得壁厚均匀，等强度，轻重量的薄壁钛环形管。
After checking the pipe wall thickness, pipe stress and safety factors this batch of steel material has still complied with the requirements, while safety Surveillance should be enhanced.
通过管道壁厚、管道应力、安全系数的校核，表明该批钢材仍符合要求，但要加强安全监督。
The selection of pipe wall thickness, the calculation and design key points of the melt flow, melt pipe flow pressure fall and melt flow speed in the design of melt pipes were introduced in detail.
介绍了熔体管道设计中管道壁厚选择、熔体流量、熔体管道流动压力降和熔体流速等计算方法和设计要点。
It is found that hoop stress increases due to reduction in wall thickness of HDPE pipe, while yielding stress decreases owing to decrease of strain rate.
同时，基于粘弹性应力分析模型得到管材蠕变的应变率逐渐减小，由于聚乙烯的屈服应力具有明显的率相关性，屈服应力也随之逐渐减小。
It is found that hoop stress increases due to reduction in wall thickness of HDPE pipe, while yielding stress decreases owing to decrease of strain rate.
同时，基于粘弹性应力分析模型得到管材蠕变的应变率逐渐减小，由于聚乙烯的屈服应力具有明显的率相关性，屈服应力也随之逐渐减小。
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