| 摘要 |
<p>The structural frame system facilitates the interconnection of tubular gates or fence sections to form enclosures and structural frames. The connecting members consist of vertical posts, having four slotted faces, at right angles to each other. The gates or fence sections are fixed to the posts with nuts and screws which clamp into the T-slots (17). The connecting members are fabricated from four identical sheet metal sections which have an internal right angled V-section with the two free edges (15,16) folded inwards to form a slotted hollow section (18). Four sections are welded together back to back to form a composite post with a T-slot (17) in each face.</p> |
