The key features of this door lie in its dual fireproof and explosion-proof performance: the 3.0mm thick cold-rolled steel panel is integrally formed without welding seams, with excellent impact resistance and explosion-proof performance, which can withstand the impact of explosive shock waves up to 0.1MPa, meeting ExdⅡCT4 explosion-proof standards. The door core is filled with 50mm thick fireproof magnesium oxide board, which is non-combustible and has low smoke emission, achieving Grade A fire resistance with 90 minutes of fire protection, effectively blocking the spread of fire and toxic smoke. The fireproof explosion-proof mechanical lock uses high-temperature resistant alloy materials, which can maintain normal unlocking function at 1000℃ high temperature, ensuring safe evacuation in fire emergencies. The door frame is sealed with fireproof expansion sealant, which expands 5-10 times when heated, filling the gap between the door and frame to prevent smoke infiltration.
Standard door leaf dimensions: 900mm (width) * 2100mm (height) * 90mm (thickness); frame dimensions: 960mm (width) * 2150mm (height) * 110mm (thickness), made of 2.5mm cold-rolled steel. The fireproof magnesium oxide board filling has a density of 800kg/m³, with a thermal conductivity of ≤0.2W/(m·K). The fireproof explosion-proof lock uses a C-class anti-pry lock core, which can resist 180 minutes of technical unlocking attempts. The door is equipped with fireproof hinges made of stainless steel, which can withstand 1000℃ high temperature without deformation. The sound insulation coefficient is ≥40dB, reducing noise interference in industrial and commercial environments. The surface adopts high-temperature resistant electrostatic spraying, which can resist 600℃ high temperature without peeling off. The overall weight of the door is 150kg, ensuring structural stability in strong wind environments.
This door is essential for commercial buildings, industrial factories, chemical plants, hospitals, underground parking lots, and fire passage entrances. In commercial buildings such as shopping malls and supermarkets, it is installed in fire escape passages to ensure safe evacuation of personnel in case of fire, while its explosion-proof performance provides additional protection in crowded areas. In chemical plants and oil refineries, its ExdⅡCT4 explosion-proof rating ensures safety in environments with flammable and explosive gases, preventing explosion accidents caused by electrical sparks or external impacts. In hospitals, its fireproof performance prevents the spread of fire between departments, protecting the safety of patients and medical staff. It is also suitable for underground parking lots to block smoke and fire from spreading to the ground floor, and for data centers to protect important equipment from fire damage.
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