| 摘要 |
<p>Provided is a screw connector for an oil well pipe, said connector equipped with a male screw (1) having a seal (5) formed as a convex surface and a shoulder (6) formed farther toward the tip than the seal (5), and with a female screw (2) having a tapered seal (7), with the contact portion of the seal (5) of the male screw and the seal (7) of the female screw being formed by pressure bonding, and the length of the male screw (5) from the tip of said male screw to the aforementioned contact portion in the direction parallel to the longitudinal direction of the male screw being set on the basis of the thickness of the oil well pipe (100).</p> |
