An article takes you to understand the development of doors and Windows industry

The door is the only way in and out of the house.Window, is the road of wide view.From ancient thatched huts to modern high-rise buildings, doors and Windows, as the most basic architectural elements, have always been accompanied by the development of human society.

Doors and Windows refer to the discontinuous peripheral protection system embedded in the main structure of the building, which does not bear the load of the main structure and does not have the function of the exterior wall of the building. It usually only includes a fixed part (window frame) and one or more than one openable part (window sash).

From the technical point of view, it carries a series of important functions such as heat preservation, sound insulation, anti-theft, sun shading, weatherability, operation feel, wind pressure resistance, mechanical strength and so on.

But generally speaking, doors and Windows are mainly divided into doors and Windows outside the building and doors and Windows inside the building two categories.Among them, doors and Windows in the building must have fire prevention and anti-theft functions, mainly used as door, room door, etc.

The exterior doors and Windows of the building are mainly used in the building envelope structure, which must have the dual functions of energy saving and bearing part of the load. They are generally used as balcony doors and Windows, passageways and doors and Windows, etc.

The extension of the industry chain of doors and Windows is simple, which is roughly composed of three parts, mainly for the upstream door and window materials, the midstream door and window manufacturing and the downstream door and window terminal customers.

Upstream door and window materials, mainly involving hardware accessories, profiles and glass.

Hardware fittings basically by hinge, hinge, track, door window lock, hold a hand, hold block, door close device, latch, window hook, prevent hotlinking to wait a moment.

Among them, hinge is mainly used for Windows, doors.

In general, the hinge needs to be matched with beads, if not matched with beads, it is easy to be blown by the wind door.

At present, there are two main door hinge and bearing type, but the bearing type hinge style is more beautiful, bright, its price is also moderate.

In addition, there are glass hinges on the market, mesa hinges, door hinges and so on.

Hinges are resilient, mainly divided into two kinds of bright hinge and dark hinge, bright hinge is more common, now basically the doors and Windows are applicable.

And the dark hinge is generally used in the furniture door, there are hydraulic, quick loading and other types.

The composition of the track includes a hanging wheel, a glass pulley and a track lamp.

Whether it is a sliding door or a sliding window, it needs a track.

Use the hand to open the door and window, it is necessary to install a handle on the door and window, so that it will be more convenient.

The handle hand on the door namely shank, it has the shape such as handle of round handle, round tube handle, square handle, double row handle, use not only firm, adornment sex is very good also.

The handle on the window is generally installed in the middle of the sash edge, and some will connect with the latch.

The latch is used to close doors and Windows to latch doors and Windows, mainly ordinary, butterfly, closed, tube and other shapes of latch.

Preventer hotlinking to include two chain board, chain of a connection, install on door fan, door frame respectively, have anti-theft effect.Door locks and door closers are door hardware accessories.There are many door locks, different occasions of use have different door locks, mainly divided into single safety door locks, double safety door locks and three safety door locks, the appearance structure of the door locks also has a lot, such as external door locks, spherical door locks, insert core door locks, etc., they are suitable for different occasions.

Door Closer is to prevent the open door automatically closed, fixed in a certain position of the device, not only has the hinge role, and fire function, like the ground spring, door slingshot, door top spring, door chuck, door device, magnetic door suction and so on are door closers.

Stretch is a window hardware accessory, is used to make the open state of the sash fixed, mainly installed on the lower edge of the sash, or in conjunction with the shutter.

Doors and Windows serve as the main component of home decoration, which is one of the key links in decoration.

With the development of material technology, the material of doors and Windows has been innovated for several generations.

Current, according to qualitative different, door window basically has door window of door of real wood door window, iron steel door, common aluminum alloy door window, plastic window (commonly known as model steel window) and door of heat insulation aluminum alloy door.

Solid wood doors and Windows give people a flavor of restoring ancient ways. General villa decoration will use solid wood doors and Windows, which can better show their status, but its easy deformation, short life, difficult maintenance and other defects can not meet the needs of modern high-rise buildings.

China's solid wood doors and Windows in each type of building Windows should be used, about 1.5 million square meters per year, less than 1% of the total amount of Windows, and the market share of developed countries solid wood doors and Windows in about 30%.

Iron steel doors and Windows strength and corrosion resistance is enough, but there are poor insulation performance, not beautiful and other shortcomings.

The ordinary aluminum alloy doors and Windows have solved the defects of the steel Windows, but the metal characteristics of the profiles have not fundamentally solved the problems of sealing and heat preservation.

Plastic doors and Windows have solved the problem of heat preservation, but U-PVC plastic profiles contain lead salt components, in the natural decomposition process will produce harmful substances to human body, and there are also easy to change color, low strength, easy to deformation and other weaknesses.

Only heat insulation aluminum doors and Windows not only improve the thermal insulation performance of doors and Windows, but also has the advantages of aluminum alloy materials.

Therefore, it has become the leading product in the market of energy-saving doors and Windows.

Glass of door window this one hand, the breed performance that different material place makes is different.

Door window glass has ordinary glass, toughened glass and hollow glass.

Common glass is the most commonly used glass in doors and Windows.

This kind of glass economy material benefit, the shortcoming is security is poor and sound insulation effect is bad.

Toughened glass is processed through ordinary glass and become, mainly used at the place with high safety requirements more, but can not solve the problem of sound insulation.

Insulating glass is made of the first two after further processing.

Hollow ordinary glass can solve the problem of sound insulation effect, but the safety should be paid attention to.

And hollow tempered glass, not only to achieve good sound insulation effect, and do strong impact resistance, high security.

In addition, in recent years in the West has been applied more than 20 years of high-tech doors and Windows glass in China's architectural decoration industry set off a boom.

High-tech doors and Windows mainly have dimming glass doors and Windows and LED glass doors and Windows.

Door window of dimming glass also calls electronic curtain, do not have too big different with common vitreous door window on the exterior, just, normally the opacity that the state shows milky white is shaped, after press switch electrify, glass becomes transparent shape immediately.

LED glass doors and Windows because of the inside of the LED glass film, so can be like the LED screen light and display a variety of pictures.

Mid-stream doors and Windows industry.

Door and window manufacturers will design and customize energy-saving doors and Windows products according to the needs and environmental requirements of users and projects, and undertake the doors and Windows construction business at the same time. The finished doors and Windows are the final products.

Among them, the design institute is responsible for the design of the doors and Windows, and the door and window manufacturers purchase materials (only a few system door and window manufacturers can produce part of the raw materials themselves.)

Undertake the integration of doors and Windows.

The installation of doors and Windows on the wall is an important part of the finished installation, it plays a very key role in the use of doors and Windows and the future maintenance, so it needs to be operated by experienced installation professionals.

At present, the installation of doors and Windows according to different project requirements can be divided into dry method installation and wet method installation.

Windows and doors downstream end customers.

Downstream applications of doors and Windows are mainly in the construction and real estate industries, where demand comes not only from new buildings, but also from the renovation of old buildings.

As the rise and fall of the doors and Windows industry is completely dependent on the downstream construction industry, the risk of market operation is basically concentrated in the only downstream industry.

For the time being, the inventory and incremental market for real estate makes the demand for doors and Windows still guaranteed.

In 2018, China's existing construction area was about 72 billion square meters, of which about 40 percent had been put into use before 2005.

At present, this part of the building has been used for 15 years or more. With the increase of the age of the building, the demand for the renovation of these stock buildings is also increasing. In the future, the demand for the renovation of doors and Windows and other decorative structures is becoming increasingly urgent.

In 2018, China's urbanization rate was 59.58%, with an average annual growth rate of about 1%.

According to international experience, the range of urbanization rate of 30%-70% belongs to the rapid urbanization stage.

Therefore, China is expected to maintain the current pace of urbanization and the corresponding demand for new construction for a period of time in the future.

After the founding of the People's Republic of China, China's population experienced a baby boom. Although the family planning policy was implemented in the late 1970s, a huge population base has been formed.

As the demographic dividend increases the speed of social wealth accumulation and consumption amount, it also indirectly promotes the development of urbanization and the real estate industry.

Especially since the beginning of the 21st century, the state has continued to vigorously promote the housing security. Among them, the "4 trillion yuan investment plan" of the state has taken accelerating the construction of indemnity-housing projects as an important investment field, making the real estate industry have spent a golden decade.

In this decade, the rapid development of China's commercial housing sales with an average annual compound growth rate of 30% provides a great space for the development of doors and Windows industry.

From 2000 to 2010, the production of doors and Windows in China developed rapidly with an average annual growth rate of 25%, and the output value of doors and Windows approached 200 billion yuan in 2011.

However, with the bursting of the real estate bubble and the fading of the real estate fever since 2012, the real estate has entered the silver era from the golden decade, and the market demand has gradually shrunk, and the growth rate of doors and Windows has also slowed down.

As of 2018, China's total production value of aluminum doors and Windows plus curtain walls is about 600-610 billion yuan.

Current, door window market is basically divided for low-end door window and the market of high-end door window that is a representative with system door window.

Among them, the difference between system doors and Windows and traditional doors and Windows lies in the systematic design, manufacturing and installation process.

Traditional doors and Windows are mainly manufactured by the construction party through simple design and assembly. There is no testing of mechanical properties, repeated opening and closing performance, water tightness, air tightness, thermal insulation performance and other indicators. There is also little consideration of the size difference between standard size sample Windows and actual doors and Windows.

Therefore, it is easy to appear sash sag, corner connection cracking, hardware breaking off, difficult to open, ventilation, water leakage and other quality problems.

The design, manufacture and installation of system doors and Windows need to follow strict procedures.

System doors and Windows through the basic technology research and development, material selection, structural design, wall installation and other strict quality control in the whole process, can achieve excellent heat insulation performance, sound insulation performance, wind pressure resistance, water tightness, air tightness and other performance, and achieve the role of green energy saving and consumption reduction.

Compared with traditional doors and Windows, system doors and Windows can be in the premise of taking into account the cost, by virtue of excellent performance, plus systematic, standardized mass production potential, profit rate is achieved higher than the traditional doors and Windows and the average level of the entire doors and Windows industry.

Although there are still ten thousand doors and Windows enterprises in our country now, the vast majority of them are small and medium-sized enterprises, the overall performance is small, low capacity, serious homogenization of products.

But with the fusion of industrialization and informationization, part of the doors and Windows, such as the staff shares, river group, hao beauty and sen ying window industries such as new materials from "big industry, small companies rely on the cost of disorderly competition between pattern to enhance the level of material research and development, design, quality and service level of customization phase transition, in order to meet the specific requirements of different types of consumers.

In the future, system doors and Windows will be a strong driving force to promote China's real estate market and improve demand.