In the construction industry, a common sight is the row of mobile houses made from color steel plates. These structures are widely used in industrial buildings such as factories, airports, and warehouses. With China's rapid urbanization, the extensive use of color steel houses and mobile homes has created a long-term growth opportunity for the color steel plate market. Recent market data shows a significant increase in sales of color steel plates.
Industry experts predict that over the next few years, China's urbanization will accelerate, leading to a surge in infrastructure projects like "iron, public, and infrastructure." This will create strong demand for color steel plates, making it a key focus for steel companies to seize this growing market.
Urbanization is driving demand for color steel movable houses. As environmental awareness grows, energy-efficient construction methods are becoming more popular. The most important aspect of building efficiency is the use of new energy-saving materials. According to national statistics, China currently has over 42 billion square meters of urban and rural buildings, but only about 5% meet energy-efficient standards. Even in new constructions, over 90% are still high-energy buildings. This creates a huge opportunity for the development and promotion of color steel composite panels and movable houses.
Mobile homes first appeared in China in the 1960s, mainly for temporary housing. Over time, they have evolved into offices, booths, and warehouses. Since the new century, with a more mature market, temporary buildings have become standardized, integrated, and serialized. The shift from traditional cement structures to color steel plate-based ones reflects this progress.
The steel used in color steel movable houses includes color steel plates, angle steel, channel steel, T-shaped steel, and more. For example, roofing tiles are made using color steel plate girders, surrounded by sealing plates, roof frames, purlins, and girders assembled from angle and channel steel. Small beams use T-shaped angle steel, while columns use channel steel and steel columns.
According to industry insiders, color steel plates used in mobile homes are a new type of structural material that combines load-bearing, insulation, waterproofing, and aesthetics. They offer many advantages: diverse specifications, vibrant colors without needing surface decoration; easy installation, reducing construction costs and allowing multiple disassemblies; good fire resistance, with B1-grade flame retardant cores that don’t melt or emit smoke; wide temperature range, from -70°C to 120°C, even up to 200°C; low thermal conductivity (λ ≤ 0.041 W/m·K), excellent insulation; odorless and non-toxic, meeting environmental standards; and waterproof and moisture-resistant due to closed-cell foam structure.
Despite the potential, China’s color steel plate market faces increasing pressure from foreign products. Color steel plates are produced through a process involving cold-rolled steel sheets, degreasing, phosphating, chromating, hot-dip galvanizing, and applying protective coatings. The variety now includes single-layer, sandwich, polystyrene, and rock wool color steel plates.
User demands for color steel plates continue to rise. However, domestic production of single-layer color steel plates still faces challenges, such as poor coating quality and lack of standardization, which affect user choices. Some manufacturers import expensive foreign coatings, harming their competitiveness and causing market price confusion.
Rock wool color steel plates have gained popularity among users. Their production process allows for full integration of rock wool and steel plates in automated factory settings, replacing on-site assembly. These plates are widely used in construction, especially in worker dormitories, due to their excellent thermal, acoustic, and fire-resistant properties.
With continued economic growth, demand for color steel plates in China will keep rising, but competition will intensify. Over 400 color-coating lines globally produce around 14 million tons annually, creating supply-demand imbalances. Foreign manufacturers are entering the Chinese market, bringing pressure to domestic producers. To stay competitive, Chinese companies must invest in R&D, improve product quality, and leverage their strengths in factory production, assembly, and standardization to drive industry growth.
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