Reaction-bonded silicon carbide square beams are suitable for load-bearing structural frames in tunnel kilns, shuttle kilns, double-layer roller hearth kilns, and other industrial kilns. This product offers high load-bearing capacity at elevated temperatures, resists bending and deformation during long-term use, and has a service life several times longer than materials of other compositions. It is an ideal kiln furniture for industries such as sanitary ceramics and electrical porcelain. The product exhibits excellent high-temperature flexural strength, thermal shock resistance, and oxidation resistance. It maintains its shape over prolonged use, significantly reduces energy consumption, and does not increase the weight of kiln cars. Main features: The product boasts excellent thermal stability, high strength, and substantial high-temperature load-bearing capacity. Utilizing advanced processes and high-temperature oxidation treatment, a protective oxide film forms on the surface, providing exceptional oxidation resistance, preventing slag shedding, and ensuring no bending or deformation over extended periods. Main applications: Particularly suitable for load-bearing structural frames in tunnel kilns, shuttle kilns, double-layer roller hearth kilns, and other industrial furnaces. It serves as an ideal kiln furniture for high-voltage electrical porcelain, sanitary ceramics, glass-ceramics, refractory materials, and other industries, with a lifespan several times that of other materials (up to 1380°C).