| 摘要 |
The tube end fixture is formed with an eye or a tongue integral with the shank of circular shape, the whole being formed as a section of an extrusion. The extrusion in a long length is cut off at intervals to form the desired fixtures. By this means it is possible to use the same alloy for the fixtures as for the tubes which is not possible when the fixtures are castings. The fixtures and tubes are welded together to form frames for staging. |
