How to identify the quality of aluminum alloy doors and windows

1. The installed aluminum alloy doors and windows should be closed tightly with uniform gap; the parallelism between the door and window fan and frame or the adjacent edge of the adjacent fan should not exceed 2 mm. Be flexible and use it freely.

2, sliding doors and windows, see if the glideslope is installed flat, pay attention to not bump, gently push the doors and windows, should slide freely.

3. The vertical frame and horizontal frame of the balcony aluminum alloy window must be firmly fixed on the balcony railing and the top of the balcony, generally fixed with nails or rivets in the concrete, and the angle steel used for painting is fixed when fixed. Can not be fixed on the brick wall, can not use a wooden wedge up and down the vertical stand instead of nail gun fixed. The gap between the upper glideslope and the top guardrail should be filled with cement mortar to prevent rainwater from pouring into the room.

4. The wall thickness of the aluminum alloy window profile should not be less than 1.4 mm, and the wall thickness of the door profile should not be less than 2 mm. The thickness of the connection between the aluminum alloy door frame and the wall shall not be less than 1.5 mm.

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