How to identify quality aluminum alloy doors and Windows
I material. High quality aluminum alloy doors and Windows used aluminum, thickness, strength and oxidation film, should conform to the national relevant specification, wall thickness should be more than 1.2 millimeter, tensile strength achieves of every square 157 Newton, yield strength to achieve every square millimeter 108 Newton, oxidation film thickness should achieve 10 microns. The inferior aluminium alloy door window, which are out of standard above, cannot be used.
II processing. High quality aluminum alloy doors and Windows, which are with fine processing, exquisite installation, are always with sealed performance, freely switch. Inferior aluminium alloy door, choosing aluminous profile series and norms blindly, processing in a rough way, in order to curium cut instead of milling process, not by the requirements for installation, sealed performance is poor, switch not freely, not only rain of air leak leakage and occurrence glass cracking phenomenon,, but also easy to blow push-pull part or glass fall or touch fall, destroy content to hurt, which once meets winds and forces
III price. Be in usually, high quality aluminum alloy doors and Windows for high production costs, price inferior aluminium alloy door window about 30% higher. Some have a wall thick only 0.6-0.8 mm aluminum production of aluminum alloy doors and Windows, tensile strength and the yield strength under national relevant specification greatly, use very insecure. In addition, at present processing aluminum alloy doors and Windows of the soho is more, they do not know the aluminum alloy doors and Windows of the structure and performance. In order to reduce cost jerry, shoddy, the hidden trouble of the product is bigger, should not be commonly use. Had better choose normal aluminum alloy doors and Windows of the manufacturer of aluminum alloy doors and Windows.
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