| 摘要 |
The present invention relates to a light weight building material ( 1 ) for structural work. The light weight building material ( 1 ) comprises at least three walls, a first wall ( 11 ), a second wall ( 12 ) and a third wall ( 13 ) formed from a single piece of galvanized iron sheet to form 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 form the light weight building material ( 1 ).
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