First, look at materials, aluminum profiles used in high-quality plastic doors and windows, thickness, strength and oxide film, etc., shall comply with the relevant national standards, the wall thickness should be more than 1.2 mm, tensile strength reaches 157 newtons per square meter, The yield strength must be 108 Newtons per square millimeter and the thickness of the oxide film should reach 10 microns. If it fails to meet the above standards, poor quality steel doors and windows cannot be used.
Second, look at processing, high-quality steel doors and windows, fine processing, installation stress, good sealing performance, switch freely. Poor quality plastic steel doors and windows, blind selection of aluminum profiles and specifications, processing and shoddy, saw cutting instead of milling, not installed as required, poor sealing performance, the switch is not comfortable, not only leakage of air leakage and glass cracking, and encountered Strong winds and external forces make it easy to scrape or touch the push-pull part or glass, causing damage to people.
Third, look at the price, under normal circumstances, high-quality plastic steel doors and windows due to high production costs, the price than high-quality plastic steel doors and windows to high energy about 30%. Some steel doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have significantly lower tensile strength and yield strength than the relevant national standards and are not safe to use.
Fourth, what determines the price of steel doors and windows
1. Profile Quality: Because of the anti-aging and anti-ultraviolet chemical composition contained in the high-quality plastic steel profiles, from the outside, the color should be blue and white, instead of white or milky white, which is generally considered by everyone; middle and low grade steel doors and windows because of the profiles Formula contains more calcium, so yellow in the white, long time will become more and more yellow.
2, steel lining thickness: In order to reinforce the steel profile, the steel window should have a steel lining inside, the steel lining has two thicknesses of 1.2, 1.5 (unit: mm). The national standard is 1.2 mm thick, which is enough for ordinary home use.
3, hardware accessories: Hardware is imported or domestic is also a major factor in determining the price of doors and windows.
Fifth, how to distinguish between genuine and fake Shide plastic steel window
(a) Profile color: The color of the True German profile is blue-white; the color of the false Shide profile is yellow in white.
(b) Whether or not there is a steel lining: steel lining is sandwiched in the real German profile; there is no steel lining in the false solid profile. The presence or absence of steel lining is very intuitive from the perspective of the cut surface and cannot be seen from the outside. The way to distinguish is: Take a magnet and suck it against the profile.
(3) Protective film: The protective film of True German profile is hot pressed and there will be no small bubbles; the false Shide profile is hand-stitched, and generally there will be small bubbles.
(4) Anti-Counterfeiting Labels: The anti-counterfeit labels of the real German profiles are very clear, and they will not fade with water. The azimuth labels of the false Shide profiles will be fuzzy and black, and the water wipe will fade, and some will even disappear.
Second, look at processing, high-quality steel doors and windows, fine processing, installation stress, good sealing performance, switch freely. Poor quality plastic steel doors and windows, blind selection of aluminum profiles and specifications, processing and shoddy, saw cutting instead of milling, not installed as required, poor sealing performance, the switch is not comfortable, not only leakage of air leakage and glass cracking, and encountered Strong winds and external forces make it easy to scrape or touch the push-pull part or glass, causing damage to people.
Third, look at the price, under normal circumstances, high-quality plastic steel doors and windows due to high production costs, the price than high-quality plastic steel doors and windows to high energy about 30%. Some steel doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have significantly lower tensile strength and yield strength than the relevant national standards and are not safe to use.
Fourth, what determines the price of steel doors and windows
1. Profile Quality: Because of the anti-aging and anti-ultraviolet chemical composition contained in the high-quality plastic steel profiles, from the outside, the color should be blue and white, instead of white or milky white, which is generally considered by everyone; middle and low grade steel doors and windows because of the profiles Formula contains more calcium, so yellow in the white, long time will become more and more yellow.
2, steel lining thickness: In order to reinforce the steel profile, the steel window should have a steel lining inside, the steel lining has two thicknesses of 1.2, 1.5 (unit: mm). The national standard is 1.2 mm thick, which is enough for ordinary home use.
3, hardware accessories: Hardware is imported or domestic is also a major factor in determining the price of doors and windows.
Fifth, how to distinguish between genuine and fake Shide plastic steel window
(a) Profile color: The color of the True German profile is blue-white; the color of the false Shide profile is yellow in white.
(b) Whether or not there is a steel lining: steel lining is sandwiched in the real German profile; there is no steel lining in the false solid profile. The presence or absence of steel lining is very intuitive from the perspective of the cut surface and cannot be seen from the outside. The way to distinguish is: Take a magnet and suck it against the profile.
(3) Protective film: The protective film of True German profile is hot pressed and there will be no small bubbles; the false Shide profile is hand-stitched, and generally there will be small bubbles.
(4) Anti-Counterfeiting Labels: The anti-counterfeit labels of the real German profiles are very clear, and they will not fade with water. The azimuth labels of the false Shide profiles will be fuzzy and black, and the water wipe will fade, and some will even disappear.
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