The invention relates to a screw-threaded pipe joint comprising a pin (20) having at one end a male screw-threaded portion and a box (10) having at one end a female portion having a complementary screw-thread. The pin and box inter-engage along the threaded portions with the male thread extending to a male stop shoulder adjacent a complementary stop shoulder on the other portion. The complementary stop shoulder comprises a recess in the form of a cone receiver having a radial surface (23) adjacent a corresponding radial surface (15) on the complementary stop shoulder. A curved sealing surface (24) on the pin (20) sealingly engages a corresponding curved sealing surface (16) on the complementary stop shoulder of the box (10), each curved sealing surface (16, 24) lying on the arc of the circumference of a separate circle, and wherein the curvature of the box sealing surface (16) is greater than on the sealing surface (24) on the pin (20).
申请公布号
WO2011121263(A1)
申请公布日期
2011.10.06
申请号
WO2010GB02261
申请日期
2010.12.13
申请人
HIGH SEALED AND COUPLED "HSC" FZCO;UENO, KATSUO;HIGNETT, IAN, HAROLD