Available with threaded end connections only.

Thoroughly clean threaded end to remove any harmful steel or iron deposits.

彻底清洗螺纹末端，清除任何有害的钢或铁沉淀物。

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The structure and design methods of a new threaded connection, the WSP premium-threaded connection, are described. The criteria of seal design and strength design of this joint are studied in detail using FEA method and testified by full-scale test.

介绍了WSP特殊螺纹接头的基本结构和设计思想，运用有限元方法，重点论述了密封设计和连接强度设计的方法和准则，并通过全尺寸试验进行了验证。

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So far, the studies of Fe-Mn-Si shape memory alloy threaded connection locking have focused on the locknut, and based on the recovery of Fe-Mn-Si shape memory alloy constraints locking bolt has not yet published in the paper.

至今，对Fe-Mn-Si形状记忆合金螺纹连接防松研究均集中于防松螺母，而基于Fe-Mn-Si形状记忆合金约束恢复的防松螺栓研究还未见报道。

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The conclusion that J-value changes with the change of thread parameters in optimum torque wrench moment. Controlling slack level of threaded connection by controlling J-value cannot ensure threaded connection is in optimum state.

认为在最佳上扣扭矩条件下，J值大小随螺纹参数变化而改变，用控制J值来控制螺纹的上紧程度是不能保证螺纹连接处于最佳状态的。

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The cone bottom of the treatment head is connected to one end of the handle body by a connecting tube, while the other end of the handle body is in threaded connection with the hand grip.

杆体呈圆柱形，治疗头的锥体底部与杆体一端由一个连接管连接在一起，杆体的另一端与把手之间为螺纹式连接。

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The deformations, stresses and strains in the sealing section, shoulder zone, thread surface and tubing body are calculated for the threaded connection under axial tensile loads and internal pressures.

获得了这种特殊扣套管接头密封段、台肩面、螺纹啮合扣面以及管体的应力分布。

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Nowadays, to acquire control method of the technological parameter for the different pretightening force of the screw threaded connection, we often use experience formulae or by calculating what the experience data we chosen.

目前，螺纹联接不同预紧力控制方法的工艺参数多是用经验公式、选择经验数据计算得到，使得预紧力离散度较大。

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It is important and significant for controlling pre-tightening force to ensure the threaded connection. The paper introduces the pretightening force selection and controlling method, which can provide reference for actual operation.

控制预紧力的大小，对保证螺纹联接具有特别重要的意义，文中介绍了预紧力的选择及控制方法，可供实际使用中参考。

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On the basis of an analysis of the location and causes of the failure of drill collar threaded connection, a high-strength drill collar threaded connection is developed.

在分析钻铤螺纹失效部位及原因的基础上，研制了高强度钻铤螺纹，它与普通钻铤螺纹相比，只是在外螺纹小端增加了一段光平的锥体。

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Threaded connection is widely used in the rolling stock industry. According to different practical problems, different customers have different requirements on the performance, parameters and materials of the threaded connection.

螺纹联接件在机车车辆行业中应用广泛，不同客户根据不同的实际问题，对螺纹联接件的性能、参数以及材料有不同的要求。

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Therefore, it is unscientific that for user to judge slack level of threaded connection of tubing or casing by J-value.

用户以J值判定油、套管螺纹连接松紧程度是否合格是不科学的。

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The accuracy of thread inspection and quality of threaded connection will be influenced by burrs resulted from the thread cutting process of tubing and casing.

油井管螺纹切削加工中产生的毛刺会直接影响螺纹检验的准确性和螺纹连接质量。

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Study on the SMA Used in the Threaded Connection's Looseness-Proof, Anti-broken and Even-load

形状记忆合金在螺纹联接防松防断均载调节中的研究

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Real time monitor of casing thread makeup torque is one of important means to improve the quality of casing threaded connection during the process of casing-runing.

在下套管作业过程中，对套管紧螺纹扭矩的实时监控是提高套管螺纹联接质量的重要方法之一。

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If inlet end adopt socket weld and outlet end adopts threaded connection, use "U" to express connection unit "S".

如进口端采用承插焊，出口端采用螺纹，则连接单元“S”用“U”表示。

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The main causes is analysed for looseness of the threaded connection on pumping unit crank pin and the corresponding preventive measures are proposed.

分析抽油机曲柄销螺纹联接在使用中发生松动的主要原因，并提出相应的预防措施；

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In order to facilitate the installation and removal of threaded connection valves, piping system at the appropriate location can be used on pipe joints.

为了便于安装和拆卸螺纹连接的阀门，在管路系统的适当位置上可用管接头。

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Pipes connecting water tank in basement and connecting pumps and water tank on roof are composite metal plastic pipes and threaded connection.

地下室水箱间与生活泵至屋顶水箱之管材采用钢塑复合管及管件丝扣连接；

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Looseproof technique of the threaded connection is the basic guarantee for the reliable work of the automatic production equipments.

螺纹连接防松技术是自动生产设备可靠工作的基本保证。

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Pretightening Force Control for Threaded Connection

螺纹联接的预紧力控制

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