Steel fire doors are essential core components in building fire protection systems. They are mainly made of high-quality cold-rolled steel plates and processed through multiple processes such as cutting, bending, and welding. The interior is filled with high-efficiency insulation and fire prevention materials such as perlite and fire-resistant rock wool, and combined with specialized fire-resistant five metal fittings to form a reliable fire separation line. Its core advantages are concentrated in two aspects: high temperature resistance and structural stability. The melting point of steel is above 1500 ℃, which is not easily deformed or collapsed in high-temperature environments during fires. It can maintain the integrity of the door for a long time and effectively block the spread of flames.

According to relevant national standards, steel fire doors are divided into three levels: A, B, and C, with fire resistance limits of 1.5 hours, 1.0 hour, and 0.5 hour, respectively. They can be flexibly selected according to the fire protection needs of different building scenarios. Class A fire doors are commonly used in high-risk areas such as fire pump rooms, distribution rooms, and valuable equipment rooms; Class B fire doors are commonly found in key evacuation areas such as stairwells, elevator lobbies, corridors, etc; Class C fire doors are mainly suitable for separating vertical shafts such as pipeline shafts and electrical shafts.

The fireproof expansion sealing strip between the door body and the door frame can quickly expand when exposed to high temperatures, tightly seal the gaps, effectively block the spread of toxic smoke, and save valuable critical time for personnel evacuation and fire rescue. In addition, steel fire doors also have the characteristics of strong impact resistance, corrosion resistance, and easy cleaning. After surface spraying or baking paint treatment, they can adapt to various architectural decoration styles and are widely used in various buildings such as shopping malls, hospitals, residential buildings, industrial plants, etc. They are important fire-fighting facilities for safeguarding life and property safety.