| 摘要 |
The invention relates to a mast arm for a concrete distributor mast, comprising an elongated box profile support (18) composed, in at least some sections, of a lower belt (22), an upper belt (20), and two lateral walls (24,26) that connect the belts (20,22), and comprising at least one partition sheet metal element (28) arranged in a hollow cross-section of the box profile support (18), the partition sheet metal element (28) being welded to the box profile support (18) along longitudinal welding joints (44) running along the box profile support (18). |
