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 after wood, steel, and aluminum alloys. The performance of heat preservation, fire resistance, waterproof, anticorrosion, and sound insulation is unmatched by wood windows, steel windows, and aluminum alloy doors and windows. Moderate price, luxurious appearance, diverse styles, good airtightness, fire and flame retardant, not easy to deform, good strength, convenient installation, and exquisite craftsmanship. It is a new generation of door and window materials with broad prospects.

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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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Classification and structure of doors

 1. Classification of doors: According to the position of the door in the building: inner door and outer door. According to the function of the door: general door and special door. According to the material of the door frame: wooden door, aluminum alloy door, plastic steel door, color panel door, glass steel door, steel door, etc. According to the opening method of the door leaf: swing door, spring door, sliding door, folding door, revolving door, rolling door, lift door, etc. 2. Door size requirements: The size of the door refers to the height and width of the door opening, which should meet the requirements for evacuation of people and the transportation of furniture and equipment, and should meet the requirements of the "Building Modulus Coordination Standard". Under normal circumstances, the height of the door is guaranteed to be no less than 2000 mm. When the upper part is set up, the height should be increased by 300~600mm. The width of the door should be sufficient for
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