API螺纹啮合后存在的螺旋性间隙是导致螺纹接头泄漏的根本原因。
It is the helical clearance area in API connections after making up that contributes to leaking.
在手指旋转使螺纹啮合无间隙后,再用带式扳手旋转不要超过一至两圈。
Apply strap wrench make-up of no more than one to two turns beyond finger tight thread engagement.
研究结果表明:接触应力、上扣扭矩、螺纹啮合时的几何约束,是齿面粘扣的力学要点。
The research result states that the contacting stress, thread torque and thread joggle geometry restriction are mechanical points of the sticky thread.
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