在内螺纹的孔的顶端或者外螺纹的管的端部拥有相同的中径，而且拥有相同的螺纹长度和深度。
Both have the same pitch diameter at the top of the hole of internal threads or end of the pipe on external threads, and both have the same thread lengths or depths.
提出一种专门用于检测工件端部的局部漏磁检测方法，介绍了一种油管螺纹漏磁检测传感器的设计方法。
A new MFL testing method which can inspect the end area of pieces is introduced and a kind of testing Sensor of tubing thread based on the digital MFL theory is described.
同时，端部法兰和顶盖骑缝中的螺纹孔可以一次性加工完成，加工制造简单方便。
At the same time, the high-neck flange and the cap straddle the screw hole can be completed a one-time processing, manufacturing is simple and convenient.
同时，端部法兰和顶盖骑缝中的螺纹孔可以一次性加工完成，加工制造简单方便。
At the same time, the high-neck flange and the cap straddle the screw hole can be completed a one-time processing, manufacturing is simple and convenient.
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