| 摘要 |
A conical thread configuration for providing strong simple and rapid make-up connection of a pin (2) and a box members (1) particularly for connecting sections of pipes, casings and conductor pipes, anchoring pipes, wellheads and risers, particularly for offshore oil production, wherein each member having a plurality of (n) thread lead entries, (n) being at least equal to two and wherein the radial dimension (a) of the engaged thread overlap after make-up is smaller than the radial thread height (h) and smaller than half of the variation (VR) of the radius of said frusto-conical surface (7,7 min ) on one thread pitch and larger than (1/2n) of said variation (VR). |
