| 摘要 |
A threaded coupled connection for pipes comprises two pins (1', 1") with a threaded portion (6) having a frustoconical shape and asleeve or coupling (2), with two threaded portions (7) of frustoconical shape. On the pins (1', 1") and on the coupling (2) there are provided two abutment surfaces (5', 5") having an annular shape and inclined at an angle ( delta ) with respect to the axis of the pipes (1', 1") and two pairs of sealing surfaces (10', 10", 11', 11"), of which one first pair (10', 10") is set at the end of the pins (1', 1") and creates a seal in regard to the internal environment, and of which one second pair (11', 11") is set at the opposite end of the threaded portions (6, 7) in the end region ofthe coupling (2) and creates a seal in regard to the environment external to the pipe. |
