Who is more sought after in the aluminum alloy PK plastic steel doors and windows?

Aluminum and its various alloys have long been recognized for their unmatched advantages over other materials. They are lightweight, strong, and can be extruded into complex cross-sections suitable for a wide range of applications. Despite the recent challenges faced by aluminum alloy doors and windows due to low-quality products flooding the market, experts believe that with the continued growth of the real estate industry, these doors and windows will remain the dominant choice. Their corrosion resistance, minimal deformation, fire resistance, long service life, and environmental benefits ensure their future relevance in the market. Aluminum alloy doors and windows were introduced in China in the early 1980s. Their lightweight and corrosion-resistant properties quickly made them popular, gradually replacing traditional steel windows. However, in recent years, plastic-steel windows have gained significant market share, challenging the dominance of aluminum. Some critics argue that aluminum frames conduct heat more easily, making them less energy-efficient compared to plastic. However, experts from the China Building Decoration Association clarify that thermal insulation is primarily determined by the glass rather than the frame material. Plastic-steel windows have traditionally been used in low-rise buildings due to issues like aging, cracking, and poor sealing. These problems allow air and moisture to enter, leading to corrosion of internal steel components and reduced structural integrity. As a result, many plastic windows become warped or difficult to operate. In contrast, aluminum alloys are widely appreciated globally for their versatility and durability. They can be manufactured into complex shapes and offer a service life of over 50 years, making them hard to replace with other materials. With increasing competition from both plastic-steel windows and foreign aluminum manufacturers entering the market, many companies are focusing on innovation and quality improvement. Consumers often opt for cheaper, lower-quality aluminum products, but such practices risk being eliminated by the market. To survive, businesses must invest in high technology, develop new products, and build strong brands. For instance, insulated aluminum profiles can provide similar thermal performance to plastic-steel windows while maintaining the strength and longevity of aluminum. The rise of plastic-steel windows has pushed domestic manufacturers to recognize the need for innovation. With the opportunities brought by WTO membership, they now face greater pressure and challenges. Companies like Northern International Xilin Aluminum are leading the way, focusing on quality, service, and high-tech development to strengthen their position in the market. As a new building material, plastic-steel windows have rapidly gained popularity in the past two years, surpassing traditional wood, steel, and color-coated doors and windows. Some predict that in the coming century, plastic-steel windows will dominate the market, pushing aluminum alloy doors and windows into decline. But what are the actual strengths and weaknesses of each? Let’s compare them based on key performance characteristics: 1. **Sound Insulation** Plastic-steel windows offer significantly better sound insulation than aluminum. For example, in buildings meeting the same noise standards, aluminum windows need to be placed 50 meters away from main roads, while plastic-steel windows can be as close as 16 meters. 2. **Thermal Insulation** When it comes to thermal performance, the thermal conductivity of PVC (0.14) is much lower than that of aluminum (175). This means aluminum conducts heat about 1250 times faster than PVC. While this doesn’t automatically mean plastic is better in all cases, studies show that rooms with plastic-steel windows can stay up to 5 degrees cooler than those with aluminum windows when using air conditioning. 3. **Corrosion Resistance** Plastic-steel windows are highly resistant to acids, alkalis, and environmental pollutants like acid rain. They don’t corrode easily, which makes them ideal for urban areas. On the other hand, aluminum can oxidize and degrade when exposed to corrosive elements, reducing its lifespan.

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