| 摘要 |
<p>The anchor for a cast concrete comprises a metallic box (1) in the form of a dove-tail. The box has a hole into which fits a tubular insert (3). The insert has an internal thread for the bolt (4) and an external thread for rapid insertion into the hole in the box. When the fixing is assembled, the bolt can be inserted from either end. The threaded insert can also be welded or fixed to the box with clips.</p> |
