| 摘要 |
<p>The armoured safe and vault doors can be installed readily. The surface of the vault doors can be covered with stainless steel plates or with anodised or painted plates. The vault door is held in a concrete frame. The door edge at the hinge runs outwards in the form of a wedge so that the door cannot be pulled from its aperture even after the hinges have been removed. The door fixed frame can be made integrally. Door has bolts on its periphery which can be actuated automatically by means of an electric motor, compressed air or by hydraulic pressure.</p> |
