Building construction site for scaffolding plate

摘要

(57) Abstract Objective When in manufacturing process of the foothold board welding process is made unnecessaryTogether, process the hole and projection for the brace easilyIt makes the ru way, mass production of the foothold board it is easy and production cost is made cheapru. Constitution Aluminum extrusion make of cross section flat square conditionMultiple both which extend to the surface of core material 11, over this total lengthInside edge opening the enlargement channel 27 is provided commonly seriately. Internal enlargement channel 27Respectively, band plate condition epidermal material 12 is inserted entrance and exit unrestrictedly. TableThe many hole 31 in order to be scattered, is opened to leather material 12, when alsoIn edge of hole 31, upper part projection annular projection 32 for braceIt provides.