The lightweight metal construction system begins with a beam formed from a single piece of {TAIL ~ cold formed sheet steel} or other sheet metal which is bent lengthwise along {HEAD ~ four lines} to form a triangular cross section with two wings, side by side, extending from its apex 
The lightweight metal construction system begins with a beam formed from a single piece of { TAIL ~ cold formed sheet steel } or other sheet metal which is bent lengthwise along { HEAD ~ four lines } to form a triangular cross section with two wings , side by side , extending from its apex
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