How to distinguish the quality of aluminum alloy d

2022-07-22
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How to distinguish the quality of broken bridge silent aluminum alloy doors and windows is the topic we care about. The outstanding advantages of broken bridge aluminum alloy doors and windows are high strength, good thermal insulation, large ventilation area and good decoration effect. Broken bridge aluminum

how to distinguish the quality of broken bridge silent aluminum alloy doors and windows is the topic we care about. The outstanding advantages of broken bridge aluminum alloy doors and windows are high strength, good thermal insulation, large ventilation area and good decoration effect

bridge cutoff aluminum alloy doors and windows

quality discrimination of bridge cutoff aluminum alloy doors and windows

from the aspect of profile quality, first look at the treatment method selected for its appearance treatment. If the appearance is a general oxidized profile, first check whether the thickness of the oxide film conforms to the specification. The thickness of oxide film is in accordance with the national regulations, and the thickness of doors and windows is generally 10 μ M above,

curtain wall at 10 μ M above. The oxide film has strong wear resistance, weather resistance and corrosion resistance, can form a variety of colors on the surface of the substrate, and has strong hardness and impact resistance. If it is a profile treated with other appearance, it is also necessary to check whether the alkali resistance, acid resistance, wear resistance,

weather resistance is outstanding, whether the profile appearance is smooth, and whether the color is common

door and window shopping guide

see whether the viewpoint of the profile is accurate. The profile cannot be bent and twisted, and the viewpoint should be correct

check whether the thickness, purity, hardness, toughness and compression resistance of the profile meet the requirements, and whether there are kneading lines on the surface of the profile, and then measure the thickness of the profile with a caliper. It is important to check the thickness. Some counterfeiters choose thin aluminum profiles to make doors and windows for users. Such doors and windows are not safe

check whether the thermal insulation strip of the profile is imported or domestic, and ask for the quality inspection statement for verification. Thermal insulation strips include imported strips and domestic strips. Now domestic strips used in China are mainly plastic (PVC); Imported insulation strips are mainly composed of polyamide (commonly known as nylon 66)

and reinforced glass fiber. It is high temperature resistant, and does not change to solar energy at minus 40 ℃ ~ 220 ℃. It has low heat conduction value and strong mechanical performance, which can reduce heat exchange and save energy by 20% - 30%

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