| 摘要 |
<p>The invention provides a high-strength self-swaging threaded pipe connection (fig. 5), having easy assembly and relatively low make up torque, that may be used on large pipelines, in oil wells and as drive-pipe, as well as for easier applications where a dependable and long life seal is desired. A precise thread form (fig. 8-11), having high angle flanks (33 and 34) and a specific included angle (41) designed to cooperate with the thread dope selected (49), results in low make up torque and reliable sealing of the connection, and prevents loosening of the connection under any load within the pipe rating.</p> |
