| 摘要 |
A threaded connection includes a first tube (10) having a pin (20), the pin having pin threads (22), a circumferential concave outer pin surface, and a pin torque shoulder at a free end (26), the concave outer pin surface including a pin seal surface (24) and a continuous extension from the pin seal surface (24) to the pin torque shoulder (26). A second tube (100) has a box (120), the box has box threads (122) for interacting with the pin threads, a circumferential inner box surface and a box torque shoulder (126). The inner box surface has a radially inwardly extending box seal surface (124), the pin seal surface contacts (24) the box seal surface (124) to define a seal. The seal is spaced from the free end when the pin and box torque shoulders contact, the continuous extension continuing from the seal to the pin torque shoulder. A method for making-up a threaded connection is also provided. |
