How to Judge the Low -cost Trap of the Aluminum Doors and Windows of the Broken Bridge? -Ruminum Profiles Supplier

1. The materials and quality of different brands of raw materials are guaranteed, and the materials and quality of the aluminum doors and windows are guaranteed, and they all meet the requirements of national standards.

(1) According to the national building materials standards, the aluminum alloy material of the broken bridge should be 6063 or 6061, which has good rigidity, strength and corrosion resistance. However, you can also buy industrial aluminum alloy or regenerative aluminum alloy squeezing profiles in the market. Its strength, stiffness and corrosion resistance are far lower than national standards; if you use such material outlines, huge hidden dangers will be left. Profile wall thickness: The national standard stipulates that the wall thickness of the aluminum profile of the broken bridge shall not be less than 1.4mm.

Generally, for home improvement products, most doors and window factories choose high -yield products, that is, products with relatively thin wall thickness to reduce costs, especially aluminum doors and windows of broken bridges, because wall thickness is related to assembly. The solid security of technology and doors and windows.

If you do not meet this standard, it is recommended not to buy.

(2) The heat insulation strip is the most critical part of the broken bridge aluminum doors and windows. PA66 nylon must be used: this is stipulated in the national standard, but many manufacturers in the decoration market currently use cheap PVC plastic insulation bar. It seriously affects the service life and safety of the product. High -quality aluminum alloy doors and windows, fine processing, careful installation, good sealing performance and convenient opening and closing. Inferior aluminum alloy doors and windows, blindly select the aluminum profile series and specifications, process it with subsequent products, saw the cutting instead of milling, the installation is not required, the sealing performance is poor, the opening and closing are uncomfortable, not only leakage, glass explosion, but also strong in wind and external force Under the action, it is easy to scrape or knock on sliding parts or glass, causing property loss and personnel damage.

(3) The difference between the vitreous eye cannot distinguish between the tempered glass and the ordinary glass, but the brand's tempered glass usually has a 3C certification sign; the quality of the glass can be checked by light transmission.

For example, if the glass is chaotic in front of the eyes, it means that it contains impurities; quality problems can also be explained by observing the flatness of the glass.

Secondly, by observing the pictures of colorful glass, if the paint overflows, it means that the craft is medium. Home decoration glass is a safety issue, so consumers are advised to buy glass in conventional building materials stores.

2. Different hardware, whether it is domestic hardware or imported hardware, as long as it is a regular brand, the quality is no problem. Excellent hardware is made of zinc alloy, high strength, difficulty deformation, and good corrosion resistance, strong bearing capacity and good stability. The inferior hardware is made of aluminum alloy. The metal properties are soft, it is not easy to deform and break, and the hardware handle is thin. 3. The brand hardware takes a set of hardware that is opened internally as an example. The low -cost market can only sell less than 100 yuan. A well -quality suit can reach two or three hundred yuan, especially imported brands, up to four or five hundred yuan. Sometimes the appearance looks exactly the same, but the difference is four to five times. This is also the difference between brand hardware and ordinary hardware. Good hardware needs to be polished, polished and plated. The surface treatment is thinner, acid -ang resistant, corrosion -resistant and smooth and easy to clean.

In addition, bad hardware craftsmanship is simple, easy to scratch the surface of the paint and easy to wear. The details of the good hardware production process are flawless, the surface is smooth, without burrs and pit, and the overall streamlined has no obvious convex points and polishing marks.

4. The different production process is the same material. There is a huge gap between the production process between different manufacturers. When some small doors and windows are assembled doors and windows, as long as they are strong, they are limited to the assembly doors and windows. When assembling doors and windows in conventional factories, in addition to being strong and beautiful, when assembling, first apply corner glue on the cross section of the aluminum. After the corner components are completed, the inside of the upper corner component is used, and then the angle is used to seal the angle. Fill the gap between the code and the contour, so that they will become a whole, that is, the connection is stronger, which can prevent the leak of rainwater in the corner of the component. At the same time, it also takes a new step of gas. This is only a small difference in the production of doors and windows, the connection of the middleware, the milling accuracy of the Falcon, and the hardware assembly. There are huge different doors and windows between small workshops and brands, which are different.

5. The installation size is different. Many broken bridge aluminists use lower unit prices to attract owners, and then charging the total price of the broken bridge aluminum doors and windows by charging the beam, columns, waterproof glue and other auxiliary materials. Calculate the final total price, low unit price. Conversely, it is higher than the unit price.

Therefore, the quotation before the measurement is very different from the actual measurement quotation, and sometimes even more. When workers go home to measure the area of doors and windows, they usually increase the price on the grounds of increasing a certain area of loss. In the process of installing doors and windows, for example, the workers directly remove the old windows without compensation, and the sealing bar needs to be paid separately. The size of the L -shaped window is calculated based on the external opening and size. The area of the steel pillar at the inflection point has not reduced. For beams, columns, corner columns, and protection frameworks, such additional projects are the most likely to increase the amount of direct line contracts.

Therefore, when you understand the price of merchants, please be sure to ask the price clearly. It is included in the quotation per square meter. Including what content, which requires a separate charging, the amount of charges, etc., it is best to let the merchants write all the detailed information contained in the square meter quotation on some vouchers. The price of the same brand and the same model will be different. Some merchants quotate more than 200 yuan/square meter and 300 yuan/square meter. This price can buy broken bridge and aluminum doors and windows. Cost analysis is impossible: a possibility is that businessmen pretend to be inferior and use counterfeit products.

One is a low-price trap. First, it is to attract customers at a low price. Finally, add a series of miscellaneous fees, such as beams, waterproof, etc. The final average price may exceed 700-800 yuan/square meter.

Therefore, when buying aluminum alloy doors and windows, not only depends on the unit price, but also the cost of accessories. Comprehensive comparison, the manufacturer should also be considered from the company's strength, the reputation of the manufacturer, the after -sales service, and the level of installation; There are higher requirements for water density, wind resistance, energy saving noise reduction, safety and other aspects. Especially for the U value of doors and windows, the lower the U value, the better the insulation and energy saving performance of the doors and windows. The U value of German doors and windows is below 0.8, while my country's requirements are different. In some large cities, such as Beijing and Shanghai, the U value of doors and windows is equal to or less than 2.2, and in other regions, the value is still around 3.0. But in fact, the U value of aluminum alloy windows in my country in uninterrupted bridge buildings is generally higher than 4.0, and the sound insulation effect is poor, let alone energy saving.

Therefore, in order to obtain good doors and windows, in addition to viewing the quality of the material, the configuration of the hardware, and the processing of the appearance details, the data of the doors and windows also need to be understood, and the heat insulation effect, sound insulation effect, lighting effect and energy saving effect. This is why German high -quality doors and windows can be sold at the price of thousands of yuan per square meter in the market. 7. Different doors and windows of safety factor are weak links in the external protection structure of the building.

If the doors and windows of your house are not anti -pried or anti -theft, then others will enter your house unparalleled. The normal broken bridge doors and windows are locked by only two lock points. Thief is easy to pry open the window with tools. The anti -theft performance of the system doors and windows has been improved on hardware accessories. The original two lock points have been changed to six lock points. The six lock points are distributed on the three sides of the window, and the side of the hinge is added to make the opening of the fan's on -side anti -pry, which greatly improves the safety performance.