Method of inspecting the installation quality of plastic steel doors and windows

 1) Look at the surface of the window: the window frame should be clean, flat and smooth, with no scratches or bruises on the large surface, and no cracks in the profile.


2) Look at the hardware: the hardware must be complete, in the correct position, firmly installed, flexible in use, and able to achieve their respective functions.


3) Look at the glass sealing strip: the contact between the sealing strip and the glass and the glass notch should be smooth, and no curling or de-grooving is allowed.


4) Look at the sealing quality: When the doors and windows are half closed, there is no obvious gap between the fan and the frame, and the sealing strip on the sealing surface should be in a compressed state.


5) Look at the glass: the glass should be flat, installed firmly, and there should be no looseness, single-layer glass should not directly touch the profile, the inner and outer surfaces of double-layer glass should be clean, there should be no dust and moisture in the glass interlayer, and the partition should not be tilted .


6) Look at the bead: the bead with the sealing strip must be tightly attached to the glass, there should be no obvious gap between the bead and the profile, and the joint gap should be less than or equal to 1 mm. Push-pull style.


7) Look at the frame material: The frame material should be tightly connected with the window frame, and sealed with caulking paste, without disturbing, the screw spacing should be less than or equal to 600 mm, and both ends of the lining reinforced steel should be firmly fixed to the opening.


8) Look at the switch components: flat, sliding or rotating windows should be closed tightly.


9) View the connection between the frame and the wall: the window frame should be horizontal and vertical, and the height should be the same, the spacing of the fixed pieces should be less than or equal to 600 mm, the frame and the wall should be connected firmly, the gap should be filled with elastic material, and the surface should be sealed with seam paste , No cracks.


10) Look at the drain hole: the position of the drain hole must be correct and at the same time unobstructed.

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