Patent ID: 11946572
Assignee: NIPPON STEEL CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 17:
18. The threaded tubular connection according to claim 1, wherein the female portion comprises a female outer tapered portion between the female outer threaded portion and the female free end, the male portion comprises a male outer tapered portion defined between the male outer threaded portion and a pipe body of the second tubular, such that the outer tapered portions of the male and female portions contact to form a second fluid tight seal once the male portion is connected to the female portion, outer tapered portions of the male and female portions having a steeper taper than the conical section of the female inner end portion of the female portion, for example with a taper of those outer tapered portions being comprised between 25% and 55%.