1. Based on the opening method, doors and windows can be categorized into fixed windows, upper-hung windows, middle-hung windows, lower-hung windows, vertical pivot windows, swing doors and windows, sliding casement windows, sliding windows, swing and lower-hung doors and windows, sliding doors and windows, double sliding windows, folding doors, floor spring doors, lifting sliding doors, sliding folding doors, and inward sliding doors.
2. According to performance, they are divided into ordinary doors and windows, sound-insulating doors and windows, and heat-insulating doors and windows.
3. Depending on the application areas, they are classified as interior doors and windows and exterior doors and windows.
4. By brand, there are Germany Xinlin plastic steel doors and windows, Scot doors and windows, Shide doors and windows, Conch doors and windows, Wu Zhitao doors and windows, and Good Jiaxi doors and windows.
5. According to manufacturer classification, there are Beijing Gujia doors and windows, Holy Sea doors and windows, Aisiou doors and windows, Top doors and windows, Emperor doors and windows, and Hong Kailai doors and windows.
Casement Window
The casement window offers a large opening area, excellent ventilation, good sealing performance, and strong sound insulation, thermal insulation, and waterproofing capabilities. Inward-opening windows make it easy to clean the inside, while outward-opening windows save indoor space when opened. However, they have limited width and a narrower field of view. Outward-opening windows require space outside the wall, making them vulnerable to wind damage, while inward-opening ones take up some room inside and may not be ideal for using screens or curtains. Poor quality can also lead to leakage issues.
Sliding Window
Xinlin sliding windows are simple in design, offer a wide glass panel, large field of view, high light transmission, and easy cleaning. They are safe, durable, and convenient to use, with an economical price and good sealing. With high-quality slides, they move smoothly. They occupy less space and allow for easy installation of screens. Currently, they are the most widely used type. However, they cannot open both sides at once, limiting the ventilation area and sometimes affecting the seal. Sliding windows operate by pushing left or right, offering a neat appearance and efficient use of space. High-grade slides enhance flexibility, and large glass panels improve lighting and aesthetics. The sash is well-structured and resistant to damage, though the ventilation area remains limited.
Underhung Window
The underhung window, developed from the casement window, is made of aluminum alloy and plastic steel. It can open either flat or push upwards from the top. When closed, the upper part can be pulled inward to create a small gap, allowing the window to open downward from the top, suspended in the air and fixed by hinges. This makes it ideal for ventilation while maintaining safety, especially when no one is home. The limited opening size prevents external access, making it suitable for various types of windows, including sliding ones.
Swing Door
Conch swing doors come in single and double versions, with one or two panels respectively. They can open in one or both directions—single-direction (push in or out) or double-direction (like a spring door). Swing doors differ from other types such as sliding, tilting, rolling, or rotating doors, offering a traditional yet functional opening mechanism.
Sliding Doors
Wu Zhitao sliding doors originated in China and spread to North Korea and Japan through cultural exchange. They are typically made of wood, metal, or synthetic materials and used in bookcases, closets, bedrooms, living rooms, and showrooms. Ancient Chinese paintings from the Song Dynasty even depict sliding doors, indicating their long history. Initially used for bedroom or dressing closet doors, they now come in various styles, including glass, fabric, rattan, and aluminum, expanding their use beyond partitions. Today, they are commonly found in bookcases, closets, living rooms, and showroom entrances.
Performance Advantages
1. Plastic steel doors and windows provide excellent thermal insulation due to the low thermal conductivity of the plastic material, which is 1250 times better than aluminum. They also offer superior air tightness, keeping interiors warm in cold regions.
2. These doors and windows have effective sound insulation, with a noise reduction of 30dB, meeting industry standards.
3. They are impact-resistant, as the outer layer is aluminum alloy, making them more durable than pure plastic windows.
4. Their air tightness is excellent, with multiple seals preventing air leakage and saving up to 50% energy.
5. They feature good water resistance, with rainproof structures that keep moisture out, meeting national standards.
6. Made from UPVC materials, they are non-flammable and do not support combustion, enhancing fire safety.
7. They offer strong security, equipped with high-quality hardware and decorative locks that deter break-ins.
8. Maintenance-free, these windows resist acid and alkali, don’t yellow or fade, and can be easily cleaned with water and mild detergent.
9. Designed with efficiency in mind, they use energy-saving profiles and have been recognized by authorities for their aesthetic and functional value, adding elegance to any building.
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