| 摘要 |
<p>The profile has on its back face, and on all of its length, a housing (2) in which is threaded a reinforcing steel profile (3). This stengthens the door-frame and for the zone of the overlap between the door-frame and the armoured door (4) mounted in the frame. The profile (1) is made bu extrusion and the dimensions of the housing (2), are made to suit the thickness of the steel profile (3). The reinforced door (4) a steel sheet (6) with an interior dressing (7) and an exterior dressing (8) and it is held in the profile by resilient ribs (5).</p> |
