Material of window of commonly used door has wood, steel, aluminium alloy, plastic, glass to wait. Wooden door window is made simple and easy, comfortable machine at handiwork, it is a kind of form that is used extensively all the time. Intensity of steel door window tall, section is little, block light little, can fire prevention, what use classics of profile of steel door window to be improved ceaselessly, fashion a variety of norms series products. Window of common steel door gives birth to rust, weight easily big, coefficient of thermal conductivity is taller. Window of steel of window of door of steel of window of window of hollow steel door, door of plating model steel, colour board, hollow model improved the ooze aluminium that new-style now development rises greatly the corrosion protection of steel door window and energy-saving function, already used in the promotion in building the house.
Window of aluminium alloy door is qualitative forceful and light, delicate, airtight performance is good, asking taller building is medium use extensively already. But aluminium alloy coefficient of thermal conductivity is big, heat preservation is poorer and cost on the high side. Use the data with better insulation property at present, be like plastic the hot industry performance that the model aluminous window that makes separator be made can improve window of aluminium alloy door greatly. The hot industry performance of plastic door window is nicety of good, treatment, anti-corrosive, it is the door window kind that has development outlook very much. The on the high side of cost of window of model steel door that at present our country produces, intensity, steel is spent reach ageing resistance to still can be waited for rise, but the development as plastic industry, excel in, be able to bear or endure service life already amounted to the plastic door window of ageing 30 years above, plastic door window is sure to apply increasingly.
Current, enter a door to must not use plywood to make by the regulation, door lock should be installed firm, the window outside ground floor, floor is communal the footpath window, light that enters a door to go up child all answer furnish iron barrier; Door pane should exterior level off, putty is full, stickup and firm.
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