1. Horizontality of the window frame: The easiest way is to fill the glideslope in the window frame (since under natural conditions, the water is always flowing down). If the water surface remains at a horizontal line, it means that the window frame is horizontal; otherwise, it means that the window frame is not installed horizontally. 2, the verticality of the window frame: it is best to measure with a horizontal ruler; you can also push the sash to close to the window frame (vertical edge) position, leaving a slight gap, this time you look at the gap between the upper, middle and lower is the same size. If the upper and lower gaps are the same, it means that the window frame is vertical; otherwise, the window frame is not vertical. <<<Links: Construction Points for Door Covers and Window Covers 6, open series: open, off whether light; closed after the tight. 7. Whether the screen window is pushed or pulled is light and the walking is stable. 8, glass: good quality glass without spots, no grain (insulating glass depends on whether the glass is clear and clean). 9. Inspection of hardware: Whether to use the hardware brand required at the time of signing (whether it is portable when used or not, and whether it feels good). Door and window acceptance window glass door Our fancy plywood plywood has tight seams, clear wood grains, and a smooth and smooth front. The manufacturer has an advantage in direct selling prices. FANCY PLYWOOD for closets,Furniture Teak Fancy Plywood,Custom Teak Fancy Plywood,Teak Fancy Plywood Linyi Lanshan Weipu Rubber Factory , https://www.wpwoodfloor.com
3. Check the steel lining: Use a magnet on the form you want to check, and it can be adsorbed on the form. Explain that the manufacturer added a steel lining to the profile cavity, but not to the steel village. As for the thickness of the steel village, besides knowing it at the processing plant, you can also listen to the sound of steel hammer struck in the window frame by the electric hammer when the installer fixes the window frame.
4, the authenticity of the identification of profiles: a look at the protective film on the surface of the profile; 2 see the profile of the concave wall is anti-counterfeiting signs (the so-called bar code), call the manufacturers of protective film on the phone, according to the prompt quotations, you can get Knowing it is true.
5. Whether the sash is slippery on the window frame track is whispered (this depends on the quality of the pulley).
10. Treatment of gaps between window frames and walls. According to the construction requirements, there is at least 1cm gap between the window frame and the wall to facilitate the filling of construction glue (first use styrofoam to fill the gap, at least over 90 minutes, foam out and level out, and then use Waterproof glue for surface treatment).