People in the industry who specialize in doors and windows say that there are too many fakes in brand plastic steel doors and windows, and the authenticity can only be distinguished through the purchase channels and product certificates. Manager Chen of doors and windows admits that at least half of the so-called brand plastic steel doors and windows on the market are fake.
However, among the owners of self-decoration, there are various opinions on buying plastic steel doors and windows. Several plastic-steel window brands and door and window processing enterprises in Hangzhou told reporters that in fact, many methods to identify true and false are wrong. Legend 1: The price of genuine plastic steel doors and windows 180 yuan/square meter. If it is lower than 165 yuan per square meter, then 100% is false.
In a door and window processing shop on Wensan Road, I asked about the price of plastic steel doors and windows. The boss said that ordinary glass plastic doors and windows are per square meter 160 yuan, and if there are old doors and windows, they can be recycled.
In a plastic-steel door and window processing shop on Moganshan Road, the proprietress said that if brand plastic-steel doors and windows are used, the price per square meter 140 yuan is the cheapest in the urban area. The proprietress also showed the reporter samples of door and window profiles, indicating that her real goods were not plastic products.
Expert opinion: not completely correct.
I heard that this statement was circulated in the market, and the person in charge of a brand of plastic steel doors and windows smiled. He said that this was not the case. It may be that some small workshops spread such news in order to raise the price of fake profiles.
The person in charge said that, generally speaking, the cost of plastic steel doors and windows used by ordinary families is about per square meter 175 yuan, while the price of tooling customers may be cheaper, so customers with large sales volume can naturally enjoy price concessions.
Manager Chen of the door and window company said that consumers can also buy authentic brand plastic-steel doors and windows per square meter 165 yuan. After all, the cost of different brands of plastic steel doors and windows is different. In the same way, the plastic steel doors and windows above per square meter 180 yuan are not necessarily genuine, and the price cannot be used as a standard to identify the advantages and disadvantages of plastic steel doors and windows.
Legend has it that you suck plastic steel with a magnet, and the stronger you suck, the better, because there is a steel lining in the plastic steel.
Actual phenomenon: When you walk into the small workshop of doors and windows facing the street, you will find that there is no need to take magnets at all, because the plastic steel doors and windows provided by the workshop have no steel lining at all. When asked if the windows will be lined with profiles when they are made in the future, the shopkeeper said with an unhappy face, the steel members are all mixed into the profiles, so where else can you see them?
Expert opinion: not completely correct.
"In order to save costs, but in order to be realistic, some small shops may have added thinner steel linings, and the magnets can still be attracted!" An insider pointed out that the steel lining became thinner, and the surface seemed to have little effect, but the fastness of the profile was much worse.
It is understood that taking a well-known brand profile with more sales in the home improvement market as an example, according to the standard requirements, the thickness of the steel lining inside the plastic-steel profile should not be less than 1.5 mm, while the steel lining provided by ordinary shops is only 0.6-0.8 mm, with a thickness difference of nearly half, which invisibly reduces the cost by half.
Steel lining is mainly used to increase the firmness of plastic-steel profiles. If the thickness of steel lining does not meet the standard, the price can indeed be cheaper, but in the end, consumers will suffer.
Legend has it that white and blue plastic steel materials are good plastic steel, while white and gray plastic steel materials are of poor quality.
Actual phenomenon: Among many methods to distinguish true and false plastic-steel profiles, this statement is the most widely circulated on the Internet, saying that as long as we grasp this principle well, we will certainly be able to buy real high-quality plastic-steel profiles. However, just like the scraps of the so-called best quality profiles provided by some roadside shops, the average consumer can't get rid of the white color even after watching it for a long time. It is estimated that if most consumers don't compare the authenticity of plastic steel doors and windows, it is difficult to distinguish the quality of profiles only by color.
The expert said: This is right.
According to insiders, there are many counterfeit brand-name plastic-steel products on the market, which are generally white and gray in color, but it is difficult to find this without comparing with brand-name plastic-steel windows.
High-grade plastic-steel profiles should have smooth surface and blue characters on white background. This profile has good anti-aging performance, and it will not age, change color or deform after being exposed to the sun for 30 to 50 years. The middle and low-grade profiles are white with yellow, which has poor sun protection ability. After several years of use, it will turn yellow until it ages, deforms and becomes brittle. The reason is that the profile formula contains too much calcium, which is another way for small workshops to reduce costs. Plastic steel doors and windows with excessive calcium carbonate often have poor stability, which affects human health.
Legend has it that insulating glass is made by clamping two pieces of ordinary glass together and pumping out the air in the middle.
Actual phenomenon: This statement is circulated in the network and real life, and even some netizens wrote this article in the decoration diary as an experience to pass on to others. Several plastic-steel processing sites in different parts of Hangzhou have similar explanations for insulating glass: the glass of a door and window is sandwiched by two pieces of glass, and there is no air in the middle, so it is called insulating glass. According to their quotation, the plastic-steel window of insulating glass is not much more expensive than that of ordinary glass.
The expert said: No.
Zhang Bin is an engineer, and his Hangzhou Hanks Sound Insulation Technology Engineering Company uses more plastic steel windows. According to him, insulating glass, vacuum glass and double glass are completely different concepts.
Insulated glass does not empty the air between two pieces of glass, but cleans and dries the air between two pieces of glass so that this layer of air contains no impurities. This kind of glass can play a certain role in heat preservation and sound insulation, and the price is more expensive than ordinary glass. Generally, few processing plants have enough technology to deal with insulating glass in this way, so what small workshops usually do can only be regarded as double glazing.
Vacuum glass means that the air between two pieces of glass is completely evacuated, and some of them will be added with inert gases such as nitrogen. This kind of glass has high sound insulation and heat preservation performance, but its cost is also high. Generally, this kind of glass is rarely used for home decoration.