The heat-transfer bridge aluminum alloy profile has a heat transfer coefficient of 1.8-3.5 W/m2·k, which is much lower than that of the ordinary aluminum alloy profile (140-170 W/m2·k); if the hollow glass structure is adopted, the heat transfer coefficient is 3.17. ~3.59W/m2·k, much lower than ordinary aluminum alloy profiles (6.69~6.84W/m2·k), effectively reducing the heat transferred from the doors and windows into the room; the broken aluminum door and window equipment before the installation of the broken aluminum doors and windows Check the size and three lines (vertical line, horizontal line, in and out line), and check that the entire facade door and window frame meets the design drawing requirements in horizontal and vertical lines. When installing the window, first position the vertical suspension line to ensure that the window on the entire façade is straight.
After the aluminum door and window installation of the broken bridge and the construction of the door and window foaming agent, the iron feet of the doors and windows should be buried in time. Seal the anchoring feet with mortar or mortar. After drying, remove the inclined wood. The window sill should be poured with C20 and then painted. Ensure the quality of the paint around the hole during construction. The horizontal beam of the hole is controlled at 1.5‰, the total length is no more than 3mm, and the verticality of the hole is controlled at 1.5‰. After painting, pay attention to strengthen the maintenance to prevent cracks in the stucco layer and seep water.
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