| 摘要 |
PURPOSE: A board for a prefabricated building is provided to manufacture with low expenses and to heighten structural stiffness and adiabatic efficiency. CONSTITUTION: The board for a prefabricated building contains: many angle steels(2,2') fixed vertically and horizontally on both sides of a metal plate(1); primary expandable plastic plates(3,3') and secondary expandable plastic plates(4,4'), which correspond to the thickness and height of the angle steels(2,2'), joined between the angle steels(2,2') in order; third expandable plastic plates(5,5'), which have the same size of the metal plate(1), joined on the outside of the secondary expandable plastic plates(4,4'); and female screw pipes(6), which pass through the secondary, third expandable plastic plates(4,4',5,5'), fixed on the angle steels(2,2').
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