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1. 发明公开

EP2196714A1 SCREW-THREADED JOINT FOR STEEL PIPE 有权转让
标题翻译： SCHRAUBENGEWINDEGELENKFÜRSTAHLROHRE
公开(公告)号：EP2196714A1
公开(公告)日：2010-06-16
申请号：EP08835808.0
申请日：2008-10-03
申请人： Sumitomo Metal Industries, Ltd. , VALLOUREC MANNESMANN OIL & GAS FRANCE
发明人： TAKANO, Takahiro , NAGASAKU, Shigeo , SUGINO, Masaaki , HAMAMOTO, Takahiro , YAMAGUCHI, Suguru
IPC分类号： F16L15/04
CPC分类号： F16L15/00 , E21B17/042 , F16L15/004
摘要： A threaded joint for steel pipes comprising a pin 1 having a tapered male thread 11, a tapered sealing surface 13, and an end shoulder surface 14 and a box 2 having correspondingly a tapered female thread 21, a tapered sealing surface 23, and a shoulder surface 24 which is capable of easy tightening and has improved air tightness by the sealing surfaces is arranged such that the pin and the box each have a noncontacting region B where the peripheral surfaces of the pin and the box do not contact each other between the sealing surfaces 13, 23 and the shoulder surfaces 14 and 24. At least a portion of the noncontacting region of the pin adjoining the end of the pin is a tapered surface portion 18 having substantially the same angle of slope as the tapered sealing surface 13, and the noncontacting region of the box is a substantially cylindrical surface.
摘要翻译：一种用于钢管的螺纹接头，其包括具有锥形外螺纹11的销1，锥形密封表面13和端部肩部表面14以及具有锥形阴螺纹21的锥形密封表面23和肩部能够容易地紧固并且通过密封表面具有改善的气密性的表面24被布置成使得销和箱各自具有非接触区域B，其中销和箱的外围表面在密封件之间不彼此接触表面13,23和肩部表面14和24.与销的端部相邻的销的非接触区域的至少一部分是具有与锥形密封表面13基本相同的倾斜角度的锥形表面部分18，以及盒的非接触区域是基本上圆柱形的表面。

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