| 摘要 |
<p>The adjustable screw connector between a plaster- embedded fitting and an external fitting is easily fitted without resorting to the use of tools. Detachable spacing rings (10) are placed between the screw sleeve (1) for connecting an embedded fitting (4) and a screw element (2) for connecting a fitting on the wall. The sleeve type connectors have internal hexagonal or square spanner seats (6, 11). The spacing rings are arranged on the external thread of the inner sleeve (2) and the outside sleeve (1) has an internal screw thread. The sleeve assembly has an external protection shell (12).</p> |
