进行可靠性计算，获得典型螺纹连接结构的力矩法控制预紧力的可靠度。
According to the calculation of reliability, we get the reliability of the typical screw joint structures the preload.
不仅仅增加了加固环，这种独特的预压缩结构能够抵消常规锥形管道螺纹连接结构所会产生的膨胀力。
Not just an added reinforcing ring, this unique pre-compression design compensates for expansion forces generated from normal tapered pipe thread joint make-up.
传统的套管接头不能满足连接与密封要求，并设计出了一种新型的膨胀连接螺纹结构。
Conventional connector for casing string can't meet the demand of seal and connection in solid expandable tubular and presented a new thread structure for an expandable casing connector.
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