Today, we have experts on cutting aluminum door and window processing equipment to teach people how to correctly select broken aluminum doors and windows. 1. To use materials: aluminum profiles used for high quality aluminum alloy doors and windows, thickness, strength and oxide film, etc., should meet the relevant national standards The wall thickness of the non-elastic assembly structure of the window is more than 1.4 mm, and the wall thickness of the non-elastic assembly structure of the door is more than 2.0 mm. Tensile strength of 157 Newtons per square meter, yield strength of 108 Newtons per square millimeter, oxide film thickness should reach 10 microns. If it fails to meet the above criteria, inferior aluminum alloy doors and windows cannot be used. 2, see processing: high-quality aluminum alloy doors and windows, fine processing, installation stress, good sealing performance, switch freely. Inferior quality aluminum alloy doors and windows, blind selection of aluminum profiles and specifications, rough processing, and saw cutting instead of milling, not installed as required, poor sealing performance, switches are not comfortable, not only leakage of air leakage and glass burst phenomenon, but also To strong winds and external forces, it is easy to scrape or fall off the push-pull part or glass, destroying things and hurting people. 3, look at the price: In general, high-quality aluminum alloy doors and windows due to high production costs, the price of high-energy than inferior aluminum alloy doors and windows to 30%. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have much lower tensile strength and yield strength than the relevant national standards and are not safe to use. About broken bridge aluminum related knowledge introduced to this, you can choose from the above points to see if this material is good or bad, here is to say that: in the purchase of profiles, you can use the hand to moderate bending profiles, should be able to recover after loosening The thickness, strength and surface treatment of aluminum profiles used in high-quality broken aluminum doors and windows shall comply with relevant national standards.