Autofab girders are competitively priced steel beams manufactured from three plates welded together to form I sections that may be used for carrying loads beyond the capacity of universal rolled I sections. The girders are welded on an autofab machine, which is a double-headed, submerged, arc- welding machine with direct current (DC) for penetration welding and alternating current (AC) for filler welding. Sections having one flange wider and/or thicker than the other one can be made. All flanges 20mm and under are pre-set to guarantee flatness after welding, flanges over 20mm will have slight curvature depending on thickness and width.
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