| 摘要 |
The vertical frame (1) has a hollow profile shaped vertical post (2), where vertical posts connection units are provided for vertical connection of multiple vertical frames at lower and upper end areas (3,4). An upper horizontal rod (5) is formed as upper open profile, particularly v-shaped or u-shaped profile. A pipe material is made of steel, and has a thickness of 2.5 to 2.7 millimeter. |
