Generally speaking, the surface of high-quality aluminum alloy doors and windows is bluish-white, and the surface will not show a white dazzling feeling. If it is pure white, it indicates that the profile has weak sun protection ability. This material contains too much calcium and is easy to age after a long time, deformation and embrittlement.
High quality the hardware used for aluminum alloy doors and windows is made of metal, which looks thick and smooth in appearance. The welding corners of doors and windows are firm and neat. The hardware accessories include window opener, door closer, hinge, handle and Bolt. I can't feel the resistance when opening the doors and windows. I feel full of sense of security when opening and closing the doors and windows stably and flexibly, and there is no extra noise.
Aluminum doors and windows with a profile thickness of more than 1.0mm have better strength. They are made of high quality aluminum ingot and have good tensile strength and yield, and will not deform for 5 to 8 years. Close aluminum alloy in typhoon weather after the doors and windows, you can enjoy a piece of peace. The leaves and sundries that are scraped down are still firm on the doors and windows without shaking. You don't have to worry too much about the firmness of the doors and windows.
The welding of aluminum alloy doors and windows has no defects such as open welding and leakage welding. The door leaf and the door frame are closed tightly and the gap is uniform. The paint surface of the product has bright color, clear texture and no defects such as scratches and bubbles on the paint surface.
High-quality aluminum alloy doors and windows products always strive for perfection, take every detail seriously, strive to present high quality products and bring ideal life experience, so that customers can use it safely.
