• 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.

    接头连接强度随着管壁厚度增加而升高,随着连接长度增大而降低;

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  • 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配置符合ANSI B16.25标准对焊连接端口,并根据阀门管道壁厚确定是属于型号2b3(b)。

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  • 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:转臂上施加一定反向弯矩有效减小的壁厚薄率。

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  • The wall thickness of metal corrugated pipe is very thin, that is the weakest link in the piping system.

    金属波纹管道系统中的薄弱环节

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  • 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.

    模拟实际结果表明采用上述参数可获得均匀强度重量薄壁环形

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  • 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过程厚控制实现前馈适应控制技术

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  • Pipe sinking drawing is analysed using continuous speed field and the equations of wall thickness variations in sinking drawing established.

    利用连续速度分析了圆管过程,建立了空拔变化量计算式。

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  • 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.

    机组在线矫平焊管生产线主要设备之一,为了确保高强度、直径、焊管生产顺利进行,矫平机的性能十分重要

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  • Researches show that the pipe wall thickness deflection occurred during the pipe manufacturing could influence the intensity of the casings to some extent.

    研究表明石油套管生产过程中产生的误差在一定程度上影响套管强度

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  • 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磁检测原理传感器用于煤气管道检测

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  • In the case of suspected corrosion of heat exchangers and pipe wall thickness.

    怀疑有锈蚀情况下换热器管道厚进行检查。

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  • 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.

    钢管质量评价过程选取了钢管外观焊缝外观、管道缺陷种类尺寸、管道材料作为评价因素集

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  • 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.

    制备成内径75~360毫米730毫米的可以取代现有各种纸质具有广泛推广应用前景

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  • The simulation and practical results show that the titanium thin pipe of a uniform wall thickness, equal strength and lig...

    模拟实际结果表明,采用上述参数可获得均匀强度,轻重量薄壁环形

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  • 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、管道应力安全系数校核,表明钢材符合要求加强安全监督

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  • 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.

    介绍熔体管道设计管道选择、熔体流量、熔体管道流动压力熔体流速计算方法和设计要点

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  • 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应变逐渐减小由于聚乙烯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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  • 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应变逐渐减小由于聚乙烯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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