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, remains unbent and undeformed during long-term use, and has a service life several times longer than that of other materials, making it an ideal kiln furniture for industries such as sanitary ceramics and electrical porcelain. It exhibits excellent high-temperature flexural strength, thermal shock resistance, and oxidation resistance. It does not deform over prolonged use, significantly saves energy consumption, and does not increase the weight of kiln cars. Main features: The product has good thermal stability, high strength, and high load-bearing capacity at high temperatures. Utilizing new processes and high-temperature oxidation treatment, an oxide film forms on the surface, providing極強的 oxidation resistance, no slag shedding, and no bending or deformation during long-term use. Main applications: This product is particularly suitable for use as load-bearing structural frames in tunnel kilns, shuttle kilns, double-layer roller hearth kilns, and other industrial kilns. It is an ideal kiln furniture for industries such as high-voltage electrical porcelain, sanitary ceramics, glass-ceramics, and refractory materials, with a service life several times that of other materials (below 1380°C).