Wooden doors and windows are a traditional building product. Before 1960s, it was the most important door and window material in the world.
In different markets, its users are very different, some are high-end and some are ordinary. Coupled with ethnic differences, religious beliefs, living habits and aesthetic concepts, the selection, shape and color of wooden doors and windows often affect consumers' behavior. Solid wood doors and windows have been used for countless years. At present, high-density fiber special-shaped doors occupy a large share in the building door and window market. This door is a mid-range product. Its styles are diverse, suitable for various types of indoor layout, and it has certain flame retardancy, light weight, no deformation and moderate price. The penetration rate of houses in North America has reached over 60%.
Honeycomb sandwich doors are energy-saving products abroad, so the sales market is very large. According to relevant data, honeycomb sandwich doors account for about 2/3 of the total output of various building doors produced in Britain every year.
In Japan, wooden doors occupy more than 50% of the building door market due to the relationship between traditional habits and architectural styles. There are quite a variety of wooden doors produced in China, including high-grade wooden doors, intermediate wooden doors, paneled doors, plywood doors, wooden fire doors, soundproof thermal insulation door, wooden security doors, honeycomb sandwich doors (multifunctional household doors) and so on. All of them are produced by professional manufacturers, and there are forty or fifty companies with large output. Together with the quantity produced by other enterprises, the annual production capacity is considerable, reaching more than 30 million meters a few years ago.
Although our country is short of forest resources and wood, the country has not restricted the production of wooden doors and windows. In addition to promoting the development of new materials, the price of wooden doors and windows is basically open and controlled by entering the market. At present, wood products occupy a large proportion in building door and window materials, especially in the vast towns and rural areas.
With the development of industry and the rise of energy-saving buildings, the lack of forest resources and the increasing attention of human beings to protecting the environment and maintaining the natural ecological balance, it has become a trend to develop new materials. Some industrialized countries in the world have formed a new pattern of door and window materials, which are mainly plastic and metal doors and windows, supplemented by wooden doors and windows. Therefore, experts suggest that solid wood doors and windows should be developed in the high-grade direction in the future, and the added value of wooden doors should be improved through fine processing and high artistic content to meet the needs of high-level consumption. At the same time, efforts should be made to develop and produce energy-saving wood doors and windows, gradually improve their functions and functions, vigorously develop plant fiber composite doors and windows, and alleviate the shortage of wood resources.
2. Steel and color-coated doors and windows Before the appearance of aluminum alloy doors and windows, hollow steel windows became the first choice for many high-rise buildings. This kind of doors and windows, which are made of cold-rolled plates, dipped with anti-corrosion primer and painted with topcoat by hand after three-in-one liquid external treatment, are generally provided by manufacturers, and then assembled after the accessories are fixed in place at the construction site, and the assembled glass is cut and painted with topcoat.
Its practice is not only inefficient and wasteful, but also the serious problems caused by improper transportation, storage and installation for a long time cannot be solved at all. 1987 color-coated angle steel doors and windows were put into production one after another.
Color-coated angle steel door and window is a new type of open-web steel window developed on the basis of the original galvanized angle steel window when the color steel plate has developed to a certain stage and the output is considerable. In addition to introducing 46 series casement windows and 70 series sliding windows from abroad, its product series has also developed 30 and 35 series casement windows and 80 series sliding windows suitable for China's national conditions.
Page 65438 +0/3 The inner and outer frames of doors and windows are assembled into frames with bolts (various core plates) and screws. In the factory, it completed the cutting of all parts, fittings and glass and the assembly of dense strips in a continuous industrial production mode, and provided them to the construction site as complete building components.
This kind of door and window has good corrosion resistance, obvious energy saving effect, strong decoration and good sound insulation effect. Its push-pull series fills a gap in steel doors and windows, and soon becomes a product more suitable for middle and high-grade buildings in China. Although the performance of doors and windows is good, they have not been widely used in China. The key reason is that there are few domestic manufacturers of high-quality cold-rolled plates, which leads to the price increase of color steel plates, which makes the price of finished windows remain high and loses its competitiveness with aluminum alloy doors and windows.
To this end, experts suggest that the equipment route of color plate angle steel doors and windows should be localized and not blindly imported. Its layout and scale should be 1-2 profile production plants in all provinces, municipalities and autonomous regions. Each plant has more than 10 assembly plants, and each profile factory has 2 rolling mills, with an annual output of 5,000 tons of profiles. Otherwise, the annual output of 20,000 square meters is appropriate, which will easily lead to the shortage of the market. 3. The good performance of aluminum profile for aluminum alloy doors and windows determines that it will be welcomed by architects and users once it is put on the market.
As early as before World War II, aluminum windows were installed in a few foreign buildings. Aluminum alloy doors and windows came out in China from the early 1980 s until the end of 1990 s, basically following several old window types abroad, but developing from less to more in number.
There are more than 1000 aluminum profile factories in China, and there are more than 2,000 extruders of various specifications, but the extrusion tonnage is much smaller, and there are few large-ton extruders. At present, the maximum tonnage of extruder reaches 3600 tons. The color of its aluminum gradually developed from bronze and white to color.
Besides oxidation and electrophoretic coating, resin spraying, paint spraying and fluorocarbon spraying are also added to the surface treatment of aluminum. In order to make the surface smoother, chemical polishing and sandblasting polishing are also used.
In order to reduce the heat conduction of aluminum profiles, some enterprises began to produce aluminum profiles with heat insulation and broken bridges. The advantages of aluminum alloy doors and windows have been in the world for decades, and their unique properties have been recognized by the world, such as light weight, corrosion resistance, high strength, good rigidity, non-toxicity, high temperature resistance, good fire resistance and long service life, which can meet various functions of various complex profiles and are irreplaceable by general materials.
With the accelerated pace of reform and opening up, China's aluminum alloy door and window industry has developed rapidly, from glass curtain walls and glass lighting roofs to the world's latest hidden frame glass curtain walls, frameless all-glass curtain walls and aluminum composite curtain walls that have appeared in Shanghai and Guangzhou in recent years. Although it started late, it developed rapidly and reached a high level. In the early days, a large number of powerful military enterprises were engaged in the production of aluminum alloy doors and windows, and their products were appreciated by architects and users as soon as they came out.
2. What is the common sense of aluminum alloy doors and windows maintenance?
1. Usually be careful not to step on the aluminum frame or take the door frame as the support point, otherwise the door frame will be deformed. No matter how good the quality of doors and windows, they can't stand man-made damage, which is relative. Man-made damage will inevitably shorten the life of doors and windows.
2. When opening and closing aluminum alloy doors and windows, gently pull or push. If you find it difficult to push or pull, you should first troubleshoot and find out the reason, and don't push hard. The main reason for the difficulty of aluminum alloy push-pull is generally too much dust or deformation, so it is necessary to keep the door frame clean, especially the push-pull slot. In order to avoid too many sundries piling up in it, we must clean it up more. Of course, you can also use a vacuum cleaner to suck the dust in the push-pull slot and door seal.
3. Wipe aluminum alloy doors and windows with a soft cloth dipped in water or neutral detergent. Ordinary soap and washing powder are not allowed, and strong acid and alkali cleaners such as detergent and toilet cleaner are not allowed.
4, but also pay attention to the maintenance of the pulley, try to gently pull and push. Pay special attention to the quality of hardware when purchasing aluminum alloy doors and windows. Although these are small pieces, the usual maintenance work is not in place, which may damage your door.
5, after the rain, to dry the wet glass and door window frame in time, pay special attention to prevent water in the chute. Sliding doors will be difficult if the chute is used for a long time. You can add some engine oil or wax oil to lubricate the chute.
This article comes from San Fano doors and windows! ! I hope to adopt,,,
Please tell me something about glass.
1. What is laminated glass? Laminated glass is a kind of advanced safety glass made of PVB film between two or more pieces of glass under high pressure. This kind of glass has excellent characteristics such as noise reduction, impact resistance and penetration resistance.
Second, what is colored glazed tempered glass? Tempered glass with colored glaze is a kind of glass product with acid and alkali resistance and high safety, which is obtained by printing colored glaze on the glass surface through a special process, drying and tempering, and permanently fusing the glaze on the glass surface. It has the characteristics of rich colors and low reflectivity. 3. What is tempered glass? Tempered glass is a kind of high-strength safety glass, which is obtained by heating the glass to its softening point and then rapidly air-cooling.
What is heat strengthened glass (semi-tempered glass)? This kind of glass has been widely used in developed countries, and it is still a new product in China. The mechanical strength of its glass is many times that of ordinary glass, and the product's performance indexes such as beautiful appearance, flatness, thickness deviation and light transmittance are closer to the original glass than tempered glass, which overcomes the shortcoming of self-explosion of tempered glass.
5. What is insulating glass? Insulating glass is a kind of high-performance sound insulation glass, which is made of two (or three) pieces of glass bonded by high-strength and high-air tightness composite adhesive and aluminum alloy box containing desiccant. 6. What is hot bent glass? Hot bending glass is glass that is heated to softening point and processed into the required shape.
Float glass: The production process of float glass is completed in a tin bath filled with protective gas. Molten glass continuously flows in from the tank kiln and floats on the surface of tin liquid with relatively high density. Under the action of gravity and surface tension, the molten glass spreads flat on the surface of molten tin, and the upper and lower surfaces are flat, hardened and cooled before being introduced into the transition roller table.
The roller of the roller table rotates to pull the glass ribbon out of the tin bath and enter the annealing kiln, and the flat glass product is obtained after annealing and cutting. Float glass was introduced into the Royal British float glass production line by Luoyang Glass Factory in the late 1970s.
It is in the tin bath, and the glass floats on the surface of the tin liquid. So this kind of glass is smooth at first, without water ripple.
Used to make mirrors and car glass. It does not shed hair or deform, which is one of its great advantages.
Secondly, the mineral quartz sand used for float glass is good. The glass produced is pure, white and transparent.
Bright and colorless. No glass boiling, bubbles and other phenomena.
Thirdly, the structure is compact, thick and smooth, and the same thickness per square meter is heavier than that of a flat plate, so it is easy to cut and not easy to be damaged. There are more than 30 production lines in China that are produced in strict accordance with national standards. This kind of glass is the best glass for civil buildings.
Compared with the thickness, its price per square meter is only about 4 yuan higher than that of flat glass. Low-emissivity glass: Low-emissivity glass is a thin film system composed of multiple layers of metals such as silver, copper or tin or their compounds plated on the glass surface. The product has high transmittance of visible light, high reflectivity of infrared light and good heat insulation performance. Mainly used in buildings, cars, ships and other means of transportation. Due to the poor strength of the film, it is generally made of insulating glass.
Glass mosaic: Glass mosaic is also called glass mosaic or cellophane tile. This is a small colored decorative glass.
According to the national standard (GB/T7697- 1996), glass mosaics can be divided into fused glass mosaics: glass mosaics with silicate as the main raw material, which are opaque or translucent and contain a few bubbles and unmelted particles. Sintered glass mosaic: glass powder is used as the main raw material, and a proper amount of binder is added to press it into a green body with a certain size; Glass mosaic sintered at a certain temperature.
Venus glass mosaic: a glass mosaic containing a small amount of bubbles and a certain amount of metal crystal particles, which flashes obviously when exposed to light. Characteristics of glass mosaic It is the safest building material. It is made of natural minerals and glass, with light weight, and is an outstanding environmental protection material.
Zero water absorption, acid and alkali resistance and other chemical corrosion, is the most suitable building materials for decoration in near-water areas. Can be used to decorate bathrooms, bathrooms, swimming pools, fountains, landscape pools and so on.
Bright colors, never fading and small size are the best materials for making artistic puzzles and mosaics. Using mosaics of different colors, you can design and make the most complicated puzzles, such as the pattern of swimming pool bottom designed by computer.
Construction of glass mosaic 1. Ensure that the construction surface is smooth and clean, mark the baseline, and then evenly spread cement or adhesive on the construction surface. 2. Paste the mosaics in sequence, leaving a proper gap between each mosaic.
After each piece is pasted, flatten the mosaic with wooden strips to ensure that each place is compacted and fully combined with the adhesive. 3. Tear the paper every other day or after the adhesive dries.
Wet the sticker with a sponge and wait until the sticker is completely wet before tearing the paper. 4, caulking.
Use tools to fill the gaps with caulking agent or original primer adhesive and white cement. 5, cleaning.
Use a wet sponge to clean the excess caulking agent attached to the mosaic, and then wipe it with a dry cloth to complete the construction steps. Note: For mosaics connected with plastic net, the plastic net is laid on the construction surface coated with cement during construction, and step 3 can be omitted.
Glass mosaic is the smallest decorative material, and because of this, their combination may change greatly. For example, on a plane, there can be many ways of expression: figurative patterns, jumps or transitions of the same color, decorative patterns of other decorative materials such as tiles, and so on.
For the curved surface or corner of the room, glass mosaic can give full play to its small size and cover the curved bread smoothly and completely. Generally, the dimensions of each glass mosaic are: 20*20, 25*25 and 30*30 (in millimeters). In addition to squares, there are varieties with rectangular or irregular edges.
Choose glass mosaic like painter's pigment, just like choosing painter's pigment. There is a stippling effect in painting, which is very close to one of its decorative effects.
In Europe, people painted with mosaics long ago, and some of them are still intact. In the ruins of the ancient city of Pompeii, archaeologists found a "mosaic puppy" made of mosaics, which completely recorded the culture at that time.
With a distant story, the identity of glass mosaic fashion decorative materials has entered the family, whether classical or modern, as long as the owner likes it. Not only the main components of glass mosaic used in bathroom are silicate and glass.
4. Tips: What should I do if the aluminum alloy doors and windows are not tightly closed and inflexible?
Aluminum alloy doors and windows are not tight, the outlet of the old air inlet;
1. Is the sealing strip aging or shrinking? If yes, replace the new sealing strip in time. The main reason for this situation is that it often experiences these extreme environments after long-term exposure to wind and sun. The service life is much shorter than normal. If the doors and windows are not tightly sealed, it is recommended to replace them as soon as possible.
The second is whether the glass glue is cracked due to falling and aging. This situation is not common. Most of the reasons are that aluminum alloy door and window assembly manufacturers did not use good quality glass glue or forgot to use it in the construction process, which led to air leakage between profile window frame and glass, as well as air leakage between window frame and wall. If there is, we must find the manufacturer to fill the leak in time. If you are a consumer with strong hands-on ability, you can buy glass glue independently in the building materials store and handle it quickly by yourself.
Third, the main air leakage phenomenon is also the most common, that is, aluminum alloy doors and windows are not tightly closed. First, the lock point slipped, resulting in the doors and windows not being closed tightly. Second, the window fell off and it was impossible to close it. This is the most common and the handling method is simple. Just find the manufacturer to debug the hardware. This is also the most common.
5. Knowledge of aluminum alloy doors and windows
What you said is too general. Is it aluminum alloy distribution or aluminum alloy processing? If processing, mainly depends on the size of the material and production. The following is my accumulated construction experience for many years. You can refer to it, but the formula of each section is different. What I introduced to you are basically GB 70 model and Golden Elephant 80 model. Please refer to:
Cutting size of 70 aluminum alloy
One: a window without a beam.
1: border = height of the window.
2: Up and Down = Width of window-2cm
3: GouGuangqi = border-5.2cm.
4; Up and down = up and down ÷ 2+0.5cm (see the exceptional dimensions of three fans).
5: Glass height = GouGuangqi-9.3cm..
6: Glass width = up and down -6 cm (large fan in the middle of three fans -7 cm)
7: Height of yarn fan = frame -5cm
8: Yarn fan width = up and down+1 cm
Two: windows with beams
1: border = height of the window.
2: top, middle and bottom = window width -2cm.
3: GouGuangqi = number of intersecting lines-1.2cm.
4: Up and Down = Up, Down, Down, 2+0.5
5: Insert board. Neutral = border-lines-7cm
6: The transverse length of the buckle line = -0.6 cm diameter.
7: Vertical length of buckle line = neutral. Insert plate-1cm (thread cutting angle)
8: glass height = number of lines-10.5cm (also = GouGuangqi -9.3cm)
9: The glass width is the same as above.
10: yarn fan height = number of threads-0.5cm.
1 1: The width of the yarn fan is the same as above.
Three: Exceptional dimensions of three fans (non-standard materials are calculated by themselves).
1: Up and down of three small fans = (bottom+9) ÷ 4-1.8cm.
2. Up and down of big fan with three fans = (down +9)÷2
3: The glass height of the small fan is the same as above.
4: The glass height of the large fan is the same as above, and the width = -7 cm up and down.
Cutting size of 80 aluminum alloy
One: Windows without lintels =
1: border height = window height
2: Up and down = window width -3cm (Liuhe's -3.5cm)
3: GouGuangqi = border-5.3cm.
4: up and down = up and down ÷2-4.7 cm
(width of three large fans = 2-2 cm up and down, width of small fans = 4-4.7 cm up and down)
5: Glass height = GouGuangqi-7.6cm.
6: Glass width = -0.5cm up and down.
7; Yarn fan height = frame-7.5cm.
8: Yarn fan width = up and down ÷2
Two: windows with beams
1: border = window height.
2: upper, middle and lower = window width-3cm (Liuhe's-3.5cm).
3: Gou Guangqi = border-total external number of upper beam-1.8cm.
4: up and down = up and down, 2-4.7 cm (same as above for three fans)
5: Insert plate, neutral = upper beam full -7.2cm.
7: The transverse length of the buckle line = up, down and down-3.8cm..
8: vertical length of buckle wire = number of neutral plates-0.2cm..
9: The inside of the yarn fan hanging high = the frame-the whole outside of the upper beam -4cm.
Yarn fan hanging high = frame-upper beam all outside-1.3cm.
10: The width of the yarn fan is the same as above.
Well, that's all I can tell you. You can refer to it
6. Window Feng Shui knowledge
First of all, it is wrong to open windows on both sides.
Pay attention when opening the window. You can't keep the windows on both sides straight, so it's hard to hide the wind and gather the air. This truth is the same as connecting the past and the future. People and money are empty.
Second, the number of windows should not be too much.
The number of windows in the home should be appropriate, not too many nor too few. Too many windows can easily lead to air leakage inside, make home life tense, and lead to disharmony in family relations. The lack of windows will suppress the internal qi, and it is impossible to get rid of the old and absorb the new, which is easy to cause heart disease among residents.
Third, the window size should be moderate.
If the window of the room is too small or does not open, it will not only appear shabby and stingy, but also narrow the capacity of the occupants. The height of the window should exceed the height of the occupant, which can not only increase the self-confidence and tolerance of the occupant, but also make it difficult to arch and arch when looking out.
Fourth, the window should be opened outwards.
The best way to open a window is to open it inward or like two sides. The window opened inside is not only blocked by curtains when it is opened, but also makes residents shrink back. If the window must open inward, it is best to put bonsai or speakers under the window to activate the internal energy.
7. How to write the safety tips?
Water, electricity and gas are closely related to life, so we must pay attention to safety when using them. Take the "two-minute prevention method" (that is, take one minute to check the water source, gas source, fire source, doors and windows at home before going to bed and going out) to prevent accidents.
First of all, water safety: to keep drinking water clean and hygienic, not to drink raw water or dirty water, the most important thing is to save water, turn off the tap at hand, and adopt a water-saving method of multi-purpose and recycling; Secondly, to use electricity safely, we must do the following: do not connect wires without permission, and do not stay and play near telephone poles and cables; Finally, gas safety: minors are strictly prohibited from using liquefied petroleum gas. When adults use gas, they should stay by until they run out. After use, they should turn off the main switch in time. In case of gas leakage, they should immediately open the doors and windows to keep the air circulating.
8. Safety tips
0 1. When getting out of the elevator, pay attention to whether the passengers in the same car are evil or not, and don't press the floor; Try to stand in the position of the control button, once.
When attacked, immediately press the button with your hand. At this time, the elevator will stop at each floor and be open to the public.
Shout "Fire! Don't hit gangsters with your bare hands.
02. If you share an elegant room, you must make three rules, and you are not allowed to give your keys to other friends at will, so as not to get out.
Enter the complex.
03. Try to take a coat when you go out at night and wrap your wallet to avoid being robbed. Meanwhile, take a taxi.
In the back seat, if the driver's behavior is found to be irregular, you can use the coat as a weapon to cover your head or neck.
Car accident (the lesser of two evils)
04. Once you find that you are being followed, you can kick or pat the roadside parking with your purse to trigger the alarm sound.
; Get attention.
05. When taking a taxi, pay attention to whether the front seat leans down to prevent others from hiding.
06. The driver should pay attention to whether anyone is around before getting on the bus. The first action after getting on the bus is to press the door lock to prevent anyone from getting on the bus.
Suddenly open the door and go in; When parking, don't write your home phone (mobile phone) in front of the window.
Don't let anyone deliberately make you do bad things when moving the car.
07. In order to prevent a fake car accident, it's really robbery. In case of an accident, don't come out at once. It's best to observe each other calmly first.
Whether it's a few people or newcomers, it's best to drive away at once and honk your horn at the same time to attract others' attention.
08. When parking, if there is another car following you, don't stop and get out immediately, wait for the other party to get off first and go further.
In case of hijacking.
09. Drinking alone in a public place, if you can't finish it, you can go to the toilet or call when you leave, and it's best to come back.
Well, don't drink any more, lest you be drugged halfway.
10. Going home at night, in order to master the road conditions, you should take the brightly lit street or walk in the opposite direction; When you go upstairs, first of all,
Ring the doorbell and let the family come downstairs to pick it up, so as not to hide in the stairwell.
1 1 Household gas hoses should be inspected once a year to find cracks, aging and hardening of the joints in time.
Replace.
12 Warm-up exercises must be done before swimming. When swimming, two or more people must be together, and one of them must swim well.
Some people are here.
13 families with nosebleeds should prepare some Yunnan Baiyao and cotton wool and learn to deal with the bleeding problem by themselves.
14 people who don't know electrical appliances should not disassemble household appliances without permission. When using electrical appliances, they will smell the burning of plastic.
When it smells, turn off the power in time and ask someone who knows electrical appliances to repair it.
9. What are the tips for choosing a door?
One.
Look at profiles: the quality of profiles directly determines the quality of doors and windows. Doors and windows produced with inferior profiles have low strength and are prone to discoloration and deformation. Profile material: thickness: 1.
0MM material: the aluminum profile, thickness, strength and oxide film used for high-quality aluminum alloy doors and windows should meet the relevant national standards, and the wall thickness should be 1. 2 mm or more, the tensile strength should reach 157 Newton per square millimeter, the yield strength should reach 108 Newton per square millimeter, and the thickness of oxide film should reach 10 micron.
If you can't meet the above standards, it is inferior aluminum alloy doors and windows and can't be used. Strength: the tensile strength should reach 157 Newton per square millimeter, and the yield strength should reach 108 Newton per square millimeter.
When buying, you can bend the profile moderately by hand, and it should be able to recover after letting go. Chromaticity (chromatic aberration): The same aluminum alloy profile should have the same color. If the color difference is obvious, it is not suitable for purchase.
Smoothness: check the surface of aluminum alloy profile, and there should be no concave or bulging appearance: natural color, smooth and uniform surface and uniform luster; Aluminum alloy doors and windows should avoid buying profiles with obvious defects such as bubbles (white spots), ash (black spots), cracks, burrs and peeling. Oxidation degree: the thickness of oxide film should reach 10 micron.
When buying, you can scrape the surface of the profile to see if the oxide film on its surface can be wiped off. Two.
Look at accessories: the choice of hardware, tops and other accessories is the key to making high-quality doors and windows. There are many painful lessons in this respect, such as fixed push and pull, lax switch, poor seal and even potential safety hazards. 0. Whether the hardware is equipped with ① adhesive tape (customized by us): one is that it can't be closed if it is less, and the other is that it can't be closed if it is more.
(Explain the flat door) ② Use a hairpin (pull nail) to open the door horizontally; At the place of the lock tongue, use a flat hair nail to prevent collision; No round head. ③ Lock: Yaju, Zhongshan manufacturer.
All-zinc alloy, luxurious. Four hinges, two.
2MM, aluminum alloy, iron bar. There are two standard doors and three non-standard doors.
⑤ The inner layer of iron angle code is plastic, and the outer layer is iron angle code. ⑥ Triangular screw and oblique nail (triangular stability) are seamless and have good sealing performance.
⑦ Pulley with steel inside and nylon (protective) screws outside; There are indoor powder and outdoor powder on the surface of stainless steel, and we use outdoor powder. Three.
Look at the production: the production equipment and technology determine whether the overall performance of doors and windows is excellent. According to the requirements of national standards, there are strict process parameters and control scope, which requires certain production equipment and technology as a guarantee, as well as a well-qualified staff.
Therefore, the quality of doors and windows produced by street workshops and regular manufacturers is very different. Look at the processing.
High-quality aluminum alloy doors and windows, fine processing, exquisite installation, good sealing performance and convenient opening and closing. Inferior aluminum alloy doors and windows, blindly choose page 2 ***4 9 1840386.
Doc adopts aluminum profile series and specifications, and the processing is shoddy. Saw instead of milling, not installed as required. Poor sealing and uncomfortable switch. There is not only air leakage and rain leakage, but also the phenomenon of glass cracking, and it is easy to scrape or touch the push-pull part or glass when encountering strong wind, which will destroy things and hurt people. Advantages of our products: ①45-degree angle, bevel edge, double-headed saw, punch, die drill (inferior to manual work by manufacturers).
② Excellent geographical location, the hometown of aluminum, da li, Foshan. Four.
Look at the installation: three-point production and seven-point installation. If you don't pay attention to the installation standards, you may cause deformation of doors and windows in the future. Therefore, expansion joints must be left between the window frame and the wall to prevent the doors and windows from deforming due to thermal expansion and contraction or slight settlement of the house.
At the same time, in order to ensure waterproof, heat insulation and sound insulation performance, expansion joints must be filled with elastic materials and then sealed with sealant. These materials are expensive and vary greatly in quality. When installing, we should guard against cutting corners and shoddy.
Five. Look at the service: the service life is more than 5-8 years, and it is inevitable that the glass and hardware will be damaged during use, but it is difficult for users to solve it by themselves, and manufacturers need to provide long-term and perfect after-sales service. Choosing a regular manufacturer is definitely more reliable than a mobile workshop.
Six. Look at the price: the price should be compared left and right, but it must be compared on the basis of the same material and performance. If you are greedy and cheap, the price will not be weighed against the performance, and users will always suffer.
Generally speaking, high-quality aluminum alloy doors and windows save about 30% energy than inferior aluminum alloy doors and windows because of their high production costs. Some walls are only 0.
6-0。 The tensile strength and yield strength of aluminum alloy doors and windows with 8 mm aluminum profiles are far lower than the relevant national standards, so it is very unsafe to use.
In addition, there are many self-employed people who process aluminum alloy doors and windows at present, and they don't understand the structural characteristics and performance of aluminum alloy doors and windows. In order to reduce the cost, cutting corners and shoddy products have great hidden dangers and are generally not suitable for use.
It is best to choose the products of regular aluminum alloy doors and windows manufacturers. Pilot 7: Is the sliding window flexible? Whether the casement window is open freely and whether the doors and windows are tightly sealed.