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With the popularity of plastic materials, the first step in fitting a second-hand house is usually to purchase plastic steel doors and windows. After all, steel doors and windows are highly sealed, lightweight, and inexpensive. However, it is also a procurement problem - in the face of everywhere the plastic steel doors and windows store and its different prices, we should choose who?
Insiders who specialize in doors and windows have said that there are too many fake steel doors and windows, and they can only be identified by the purchase channels and product certificates. Manager Chen of Hanbang Doors and Doors frankly stated that at least half of the so-called brand steel doors and windows in the market are fake.
However, in the independent decoration of the owners spread a variety of buying steel doors and windows of the argument. Several plastic window manufacturers and door and window processing companies in Hangzhou told the reporter that in fact, many ways to identify true and false are wrong.
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Legend of the stream one: authentic steel doors and windows price 180 yuan / square meter, if less than 165 yuan per square meter, then 100% is false.
A door and window processing shop on Wensan Road inquired about the price of plastic doors and windows. The owner said that the ordinary glass steel doors and windows are 160 yuan per square meter. If there are old doors and windows, they can be recycled.
In the Moganshan Road, a plastic door and window processing point, the boss said that if the brand steel doors and windows, then 140 yuan per square meter, is the cheapest price in the urban area. The proprietress also took out a sample of the door and window profiles to reporters to show that their own real goods, not plastics.
Expert opinion: not exactly
It was said that there was a saying in the market that the person in charge of a certain brand of steel doors and windows laughed. This is not the case, he said. It may be that some small workshops spread such news to raise the price of counterfeit profiles.
The person in charge said that, in general, the cost of plastic steel doors and windows used by ordinary families is around 175 yuan per square meter, while the price for tooling customers may be cheaper. Naturally, large-volume customers can enjoy preferential prices.
Manager Chen of Hanbang Doors and Windows said that consumers may also buy authentic brands of steel doors and windows at around 165 yuan per square meter. After all, different brands of steel doors and windows cost differently. By the same token, the purchase of plastic steel doors and windows of more than 180 yuan per square meter is not necessarily a genuine product, and the price cannot be used as a criterion for distinguishing the advantages and disadvantages of plastic steel doors and windows.
Flow legend method two: You take a piece of magnet to get plastic steel, the more you suck, the better, because there is a steel liner inside the plastic.
Actual phenomenon: When you walk into the small workshops and doors on the street, you will find that there is absolutely no need to take a piece of magnet, because the plastic doors and windows provided by small workshops are not lined with steel. When asked if it was later made into a window, it would line the inside of the profile. The store owner said with a supercilious eye that the steel components had been mixed into the profile and they were still visible.
Expert opinion: not exactly
"Some small stores may save cost, but they may add a thin steel lining for realistic counterfeiting. The magnet can still absorb it!" An insider pointed out that the thinning of the steel lining does not seem to affect the surface, but The fastness of the profiles is much worse.
It is understood that, for a brand name profile with more sales in the home improvement market, for example, according to the standard requirements, the thickness of the steel lining in the steel profile should not be less than 1.5 mm, while the steel lining provided by the general store is only 0.6-0.8 mm. The difference in thickness is almost half, and the cost is virtually reduced by half.
The steel lining is mainly used to increase the firmness of the steel profiles. The use of steel linings that do not meet the standard thickness can be a little cheaper. However, the ultimate disadvantage is consumers.
Legend of the flow of three: the white pan-green plastic material is a good steel, white gray plastic steel is of poor quality.
Actual Phenomenon: This statement is the most widely used one among many methods for distinguishing between genuine and fake steel profiles. It is said that as long as this principle is grasped, it will surely be able to buy real high-quality plastic steel profiles. However, as some of the so-called best-quality profiles of edge materials provided by some roadside shops, the average consumer is not able to see a half-day in addition to white but also to see the color. It is estimated that most consumers would not be able to discern the quality of the profiles by color alone if they did not take the comparison between genuine and fake steel doors and windows.
Experts say: This is right
According to industry insiders, there are many fake steel plastic products on the market today. The color is generally white and gray, but it is hard to find this contrasting with famous steel windows.
High-grade plastic steel profiles should be surface smooth, white and blue in appearance, such profiles have good anti-aging properties, and will not be aged, discolored, or deformed in the outdoor wind and sun for 30 to 50 years; White yellow, this color sunscreen ability is poor, after using a few years will become more and more yellow until aging, deformation, embrittlement, the reason is that the formula contains too much calcium, which is a small workshop to reduce costs and another the way. The steel doors and windows that increase the excess calcium carbonate often have poor stability and affect human health.
Legend of the flow of four: Insulating glass is two ordinary glass clip together, drawn from the air produced.
Actual Phenomenon: As for this statement, the Internet and real life are circulated in this way. There are even netizens writing this article in the decoration diary and passing it on to others as experience. Several plastic steel processing sites in different areas of Hangzhou City have similar explanations for insulating glass: a window glass is made of two pieces of glass, and there is no air in the middle, so it is called hollow glass. According to their quotes, plastic windows made of insulating glass are not much more expensive than those made of ordinary glass.
Experts say: wrong
Zhang Bin is an engineer and his Hangzhou Hanks Sound Insulation Engineering Company uses more plastic windows. According to him, insulating glass, vacuum glass and double glass are completely different concepts.
Insulating glass does not evacuate the air between the two glasses, but instead cleans and dries the air between the two layers of glass to keep the air free from impurities. This kind of glass can play a certain role in insulation and sound insulation. More expensive than ordinary glass. In general, there are few enough technologies to process hollow glass in this way, so a small workshop usually only doubles.
Vacuum glass is the air between the two glasses is completely evacuated, and some will add inert gas such as nitrogen, this kind of glass is relatively high sound insulation and thermal insulation performance, but the cost is higher, the general home improvement rarely use this glass .
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