专利名称：Light weight building material发明人：Hong Liang Ng申请号：US09799330申请日：20010305
公开号：US20020121068A1公开日：20020905
专利附图：
摘要：The present invention relates to a light weight building material () for structuralwork. The light weight building material () comprises at least three walls, a first wall (), asecond wall () and a third wall () formed from a single piece of galvanized iron sheet toform a triangular-section. However, a circular section may also be used while a
rectangular section is preferred. The galvanized iron sheet is cut and cold-rolled to formthe light weight building material ().
申请人：NG HONG LIANG
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