A span member for supporting scaffolding platforms in scaffolding using support posts that have perforated disks for mounting connecting heads. The span member includes a light-metal U-shaped beam with supporting edge webs on vertical legs thereof. The connecting head, shaped in many areas in a space saving manner and with a disk slot, includes welding flaps which abut inner surfaces of the vertical legs and are fastened thereto with a welded seam at the top.
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