| 摘要 |
<p>This invention concerns a fitting for multilayer tubes, which includes a tang (14) to be inserted into one end of the tube and a joint (16) for connecting other complementary elements. The tang (14) has an end conical zone (20) acting as a calibrator, an initial cylindrical zone (21) with an external grip threading (24) which engages the internal surface of the tube, and at least one seal (23) between said conical zone and said cylindrical zone. An external sleeve (12) is positioned around the tube to block it in said cylindrical zone when the grip threading is locked in the internal surface of the tube.</p> |
