| 摘要 |
The present threaded joint comprises a coupling or threaded member in its internal surface in both of its ends -female- which joins a pair of members, each of them bearing external threads -male. The union between male and female ends is produced by means of the threaded surface. This joint is characterized in that the axial length of each male end is increased as compared to conventional joints. Further, each male end bears, on its free end at the vicinity of the threaded surface, an annular surface situated perpendicularly as regards the joint axis, such that once joined to the female end, said annular surface contacts the homonymous annular surface of the other male end which joins the other female end. Through the combined action of both effects, a higher resistance against joint jump-out upon combined loads action (bending, tensile, etc.) is achieved.
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