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The historical evolution of doors and windows

 The earliest mullioned windows are found in Han tombs and Taowu Ming wares. There are also a large number of brick, wooden buildings and murals in Tang, Song, Liao, and Jin. Since the Ming Dynasty, it has been gradually replaced by sill windows in important buildings, but it is still used in civil buildings. Before the Tang Dynasty, there were still many mullion windows, which were fixed and could not be opened, so their functions and shapes were restricted.  Since the Song Dynasty, there have been more and more open and closed windows, and there have been great developments in type and appearance. In the Song Dynasty, a large number of lattice windows were used, in addition to square lattices, there were ball patterns, ancient money patterns, etc., which improved the lighting conditions and increased the decorative effect. The threshold windows of the Song Dynasty have been applied to the sill walls on each side of the hall door. They evolved from lattice doors, so they are similar i
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Door and window material

 Wood: Convenient processing and repair, more light blocking, excellent heat preservation performance, solid wood easily deformed, integrated wood for high-end wooden windows Steel: Standard steel window material (solid web, empty web) is strong and durable, fireproof, less light-blocking, economical, poorly maintained, easy to rust, and poor thermal insulation performance Stainless steel: excellent decorative effect, no rust, high cost Aluminum alloy: extrusion molding, good decoration effect, poor heat preservation, high energy consumption Plastic steel: good overall performance, cost-effective Broken bridge aluminum: There are two forms of wear strip and glue injection, energy-saving and heat-insulating, strong and beautiful. Glass: often used to make indoor partitions, frameless pop-up doors, etc. FRP, glass fiber reinforced material, is a new type of composite material, which has many advantages such as light weight, high strength, anti-corrosion, heat preservation, insulation, so
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Compared with wooden doors and windows, steel doors and windows, aluminum alloy doors and windows have the following characteristics

 1. Light weight, strong and durable. Aluminum alloy doors and windows are about 50% lighter than steel doors and windows; they are more corrosion-resistant than wooden doors and windows, and are not easy to decay. The oxidized color layer does not fall off, does not fade, and is durable. 2. Good sealing performance. Aluminum alloy doors and windows have high airtightness, water tightness and sound insulation are better than wooden doors and windows and steel doors and windows. 3. Bright and beautiful color. The frame materials of aluminum alloy doors and windows are treated by ammoniating and coloring, and can be colored silver, bronze, dark red, etc., and can be colored with colored patterns. The aluminum alloy doors and windows made of it have beautiful appearance, smooth surface, bright and firm color, and enhance the decorative effect of indoor and outdoor facades. The split single-layer glass release plastic steel doors and windows are the fourth generation of doors and windows a
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Method of inspecting the installation quality of plastic steel doors and windows

 1) Look at the surface of the window: the window frame should be clean, flat and smooth, with no scratches or bruises on the large surface, and no cracks in the profile. 2) Look at the hardware: the hardware must be complete, in the correct position, firmly installed, flexible in use, and able to achieve their respective functions. 3) Look at the glass sealing strip: the contact between the sealing strip and the glass and the glass notch should be smooth, and no curling or de-grooving is allowed. 4) Look at the sealing quality: When the doors and windows are half closed, there is no obvious gap between the fan and the frame, and the sealing strip on the sealing surface should be in a compressed state. 5) Look at the glass: the glass should be flat, installed firmly, and there should be no looseness, single-layer glass should not directly touch the profile, the inner and outer surfaces of double-layer glass should be clean, there should be no dust and moisture in the glass interlayer,
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The role and characteristics of windows

 Windows are not only used to look at the scenery outside, but to a large extent, determine the quality of life, but sometimes, many problems are not noticed at all. Home is a habitat, a relatively independent small environment created by myself, which is protected from wind and rain, shading and sound insulation, and protecting myself from any intrusion from outside factors. It is said that it is relatively independent because it is impossible to live alone without being completely separated from the outside environment. It requires a reasonable exchange and exchange between indoors and outdoors. In this small environment, you need the right temperature, humidity, air, and light, as well as a sound environment that suits you. You need windows to let in light, so the excess heat will come with the sun. The windows need to be ventilated, so with the circulating air, it may be dust and mosquitoes. Problems often follow your needs, so you must not be careless about your own windows. Featu
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What are the characteristics of windows?

Effect Windows are not only used to look at the scenery outside, but to a large extent, determine the quality of life, but sometimes, many problems are not noticed at all. Home is a habitat, a relatively independent small environment created by myself, which is protected from wind and rain, shading and sound insulation, and protecting myself from any intrusion from outside factors. It is said that it is relatively independent because it is impossible to live alone without being completely separated from the outside environment. It requires a reasonable exchange and exchange between indoors and outdoors. In this small environment, you need the right temperature, humidity, air, and light, as well as a sound environment that suits you. You need windows to let in light, so the excess heat will come with the sun. The windows need to be ventilated, so with the circulating air, it may be dust and mosquitoes. Problems often follow your needs, so you must not be careless about your own windows
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Need to pay attention to many issues when choosing doors and windows?

 1. The appearance should be beautiful: the surface paint film of wooden doors and windows should be smooth and bright, without flow, bubbles, wrinkles and other quality defects, without corrosion points, dead knots, and broken; the wood used for the door and window cover should be the same as the wood of the doors and windows. The color is coordinated, the color difference between the veneer and the wood line cannot be large, and the tree species should be the same. 2. The door and window sash should be square, not warped and deformed, and consistent with the door and window frame: If the gap between the door and window sash and the frame is large, it is mainly because the planing and repairing is not correct during installation or the door and window frame is not perpendicular to the ground. Re-plan and repair under the bottom; if the door and window frame is not vertical, straighten the gasket in the frame plate. 3. The hinges should be positioned accurately and installed firmly: If
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