Eddy current, magnetic leak, magnetic particle and ultrasonic test are the main methods used for pumping rod test.
目前，对抽油杆的自动探伤主要有涡流、漏磁、磁粉及超声方法，各有其优缺点及适用范围。
The common faults during oil pumping rod inspection are analyzed, the reasons that cause them and the solving methods are discussed.
对抽油杆检测中发现的常见不合格项进行了分析，探讨了形成原因和解决方法。
A pumping rod housing lock joint of a screw pump is primarily used to resolve the problem that the current screw pumping rod joint is easy to release.
一种螺杆泵抽油杆防脱扣接头主要解决现有螺杆泵抽油杆接头易脱扣问题。
The design philosophy and method for equal stress ratio of pumping rod are proposed and the corresponding software for optimization design of rod pumping parameters is compiled.
文中还提出了抽油杆等应力比的设计思路和方法，并编制了相应的机抽参数优化设计软件。
The design philosophy and method for equal stress ratio of pumping rod are proposed and the corresponding software for optimization design of rod pumping parameters is compiled.
文中还提出了抽油杆等应力比的设计思路和方法，并编制了相应的机抽参数优化设计软件。
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