[China Aluminum Industry Network] now coincides with the traditional "golden nine silver ten" period, is the annual sales season of building materials industry. As in previous years, the reporter found during the visits to the window and door market that the brands of doors and windows that are closer to the market have started to launch various promotional packages for the National Day. At the same time, as the wave of marriages in October is approaching, the tide of renovation of new homes has also increased the market demand for door and window products. Therefore, under the dual influence of price cuts for door and window products and the gradual increase in actual demand for products, the overall sales of door and window products on the market have experienced a substantial increase.
However, after the reporter visited the market, he discovered that in the face of a dazzling array of doors and windows products, many consumers still said that they did not know how to make selections, and complaints about the distortion of doors and windows and the lack of movement after the purchase of products were commonplace. To this end, the reporter specially targeted the aluminum alloy door and window products that are more popular among consumers in the windows and doors market today, and specifically interviewed relevant persons in charge of the doors and windows of Jane Europe's front runners who have a good reputation in the market. During the interview, Mr. Wu Yuanwei, sales director of OPEC's doors and windows, provided the decoration community with five criteria that should be followed for the purchase of high-quality aluminum doors.
Criterion I: Only Products with Clear Product Marks OPEC's doors and windows Wu Zong said that manufacturers with formal or production licenses will indicate the product's marks in the obvious parts of their aluminum alloy products, including the manufacturer's name or brand name, and the product name. , product model or mark, manufacturing date or number, etc. The packaging box should also have obvious "moisture-proof", "careful light" and "upward" words and signs.
For example, OPEC doors and windows products are just like this. In addition to having a brand logo in a prominent position, the logo of OPEC doors and windows will be printed on the hinge. In addition, aluminum film doors and windows of the OPEC products, there will be a layer of aluminum fabric manufacturers pro-printed "Xinhe aluminum" logo film, and other brands are generally not.
Standard two, the smaller the product size deviation, the better OPEC doors and windows Wu told reporters that aluminum alloy doors and windows products will have a size deviation of the qualified range, with smaller size deviation is better. Outside the range, it is a non-qualified product. For example, a standard stipulates that the width and height of the slot of the door and window frame should be ≤2000mm, the allowable deviation range is ±1.0mm, and the verticality of the front and side of the frame of the door/window frame (including the piling material) should be ≤2000mm. The range is ≤2.0mm, and so on.
Standard 3, the higher the surface quality, the better the OPEC door and window, Wu always believes that the surface quality of doors and windows has a direct impact on the decorative effect of the entire wall after installation. Therefore, you should pay attention to the following aspects when checking the surface of windows and doors. the quality of:
1. There should be no obvious damage to the decorative surface of doors and windows, and the protective film on the surface of doors and windows should not have scratches and scratches.
2. There should be no obvious color difference on the colored surface of adjacent components on the doors and windows.
3. There should be no aluminum chips, burrs, oil spots or other stains on the surfaces of doors and windows; there should be no spillage of adhesive at the assembly joints; there should not be too many nail holes exposed to affect the appearance. General Manager Wu told reporters that on this point, many brands on the market are not doing well. In order to maximize the quality in this area, OPEC's doors and windows have also been greatly improved. For example, OPEC doors and windows have been made to cover the left and right sides of the swing door leaf, so that the appearance of the door is more beautiful and refined. There are many brands on the market that have failed to do so. When the door is opened, you can see the screw holes, the locking rivets, and the pull nails on the hinges.
Standard four, aluminum alloy doors and windows of the component connection part should be sealed in the components, according to Wu introduced, aluminum alloy doors and windows of the components should be firmly connected, need to use corrosion-resistant filler material to make the connection part sealed, waterproof, moisture-proof.
The reporter learned that OPEC doors and windows are also more advantageous in this respect. The double-sided glass sheets used in its products are different from other brands on the market with ordinary double-sided tapes, but they are made of moisture-proof hot-melt adhesives. This difference greatly increases the moisture resistance of its products. For example, when the temperature difference between indoor and outdoor is too large, water vapor is prone to appear in glass composites with double-sided adhesive tapes, and the fog is veiled, but products using moisture-proof hot melt adhesives are not.
Standard Five, material needs to meet the requirements of six According to reports, aluminum alloy doors and windows products in the materials used mainly in six aspects of the requirements:
1. Thickness: There are 70 series and 90 series aluminum alloy sliding doors (series numbers indicate the thickness of the door frame thickness in millimeters). The aluminum alloy sliding door inside the house can use 70 series. The aluminum alloy sliding window has 55 series, 60 series, 70 series, 90 series four. The selection of the series should be based on the size of the window hole and the local wind pressure. Among them, aluminum alloy sliding windows used as closed balconies should not be smaller than the 70 series.
2. Strength: Tensile strength shall be 157 Newtons per square meter and the yield strength shall be 108 Newtons per square millimeter. When you purchase, you can use the hand to bend the profile moderately, and then you can rejuvenate it.
3. Color: The same aluminum alloy color should be the same, such as the color difference is obvious, that is not suitable for purchase.
4. Flatness: When inspecting the surface of aluminum alloy profiles, there should be no depressions or bulges.
5. Gloss: aluminum alloy doors and windows to avoid the purchase of surface bubbles (white spots) and ash (black spots), as well as cracks, burrs, peeling and other obvious defects in the profile.
6. Degree of oxidation: The thickness of the oxide film should reach 10 microns. When you purchase, you can lightly stroke the surface of the profile to see if the oxide film on the surface can be wiped off.
Later, OPEC Doors and Windows Director Wu reminded that there are many self-employed aluminum alloy doors and windows, but they do not understand the structural characteristics and performance of aluminum alloy doors and windows. In order to reduce costs, there are often cases of cutting corners, shoddy materials, and shoddy products. Therefore, the hidden danger of the product is relatively large and generally not suitable for use. When the consumer purchases, it is better to use the products of regular aluminum alloy door and window manufacturers.
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