Views: 7 Author: Site Editor Publish Time: 2021-09-01 Origin: Site
casement. Current metal doors and windows can also be made flat. The window sashes are hinged and pushed open. The advantages are large opening area, good ventilation, good airtightness, sound insulation, heat preservation and impermeability. The inner opening window is convenient for cleaning the window; the outer opening type does not occupy space when it is opened.
The disadvantage is that the window width is small and the field of view is not wide. A piece of space outside the wall to be opened when opening windows outside is easily damaged when strong winds blow; while windows opening inside takes up part of the indoor space, and it is inconvenient to use screens, and it is not convenient to use screens, curtains, etc. when opening windows. Convenient, if the quality is not good enough, it may seep rain. Sliding windows are switched from left to right, and window sashes slide on guide rails, which is currently the most commonly used method for aluminum alloy windows.
The advantages are simple, beautiful, large window width, large glass block, wide field of view, high daylighting rate, convenient glass cleaning, flexible use, safety and reliability, long service life, opening in a plane, less space, convenient installation of screens, etc. The disadvantage is that two or three windows cannot be opened at the same time, at most they can only be opened halfway, and the ventilation is relatively poor; sometimes the airtightness is also slightly poor.