Extruded hollow aluminium alloy panel and method for producing the same

摘要

An extruded hollow aluminum alloy panel (10) includes a panel body (20) and a guide rail (22) that are integrally formed by extrusion so as to extend in an extrusion direction. The panel body (20) has a plurality of closed spaces defined between plates by ribs (14,16,18) in a cross section perpendicular to the extrusion direction. The guide rail (22) has an open space in the cross section.