Strong Steel Fireproof Rated Emergency Exit Door

As a professional Chinese manufacturer and supplier of Strong Steel Fireproof Rated Emergency Exit Doors, Mingjue is committed to providing you with high-quality products. While maintaining robust fire resistance, our doors are optimized for ease of opening and passage width, making them ideal for use in public buildings such as shopping malls, office complexes, and hotels.

What is a Strong Steel Fireproof Rated Emergency Exit Door?

This specialized Strong Steel Fireproof Rated Emergency Exit Door for commercial building evacuation is independently developed and manufactured by Shandong Mingjue. The door frame, door leaf skeleton, and panels are all constructed from high-quality steel materials. The interior of the door leaf is filled with fire-resistant and thermal-insulating materials that are non-toxic and harmless to humans. Equipped with specialized fire-rated hardware, this product serves as a dedicated fire escape facility possessing specific, certified fire-resistance capabilities. Its core function is to effectively block the spread of fire and smoke during an emergency, ensuring that evacuation routes remain unobstructed and gaining precious time for personnel to make an emergency escape. Simultaneously, it meets the practical demands of commercial buildings—including high-frequency usage, ease of maintenance, and aesthetic compatibility with architectural styles—thereby combining both fire safety and practical convenience.

Product Features

1.Certified Fire Resistance: Built to GB 12955 standards with up to 1.5-hour fire rating for maximum protection.

2.Durable Steel Construction: Cold-rolled galvanized steel ensures impact resistance and long service life.

3.Emergency-Friendly Design: The Strong Steel Fireproof Rated Emergency Exit Door features push-to-open function for instant evacuation.

4.Smoke Sealing System: Prevents toxic smoke spread, protecting evacuation routes effectively.

5.Low Maintenance Surface: Anti-corrosion coating reduces cleaning and maintenance costs.

Technic Parameters

Professional Production Process

Material Selection: The materials used for manufacturing the Strong Steel Fireproof Rated Emergency Exit Door include cold-rolled galvanized steel sheets, fire-resistant rock wool, and fireproof hardware accessories that comply with national standards. Material inspections are conducted before they enter the site to prevent any substandard materials from being used in production.

Cutting and Bending: Based on the design drawings, CNC cutting equipment is used to precisely cut the steel sheets, and professional bending machines are used to form the bends, ensuring accurate dimensions of the door frame and door leaf with a tolerance controlled within ±1 mm.

Welding and Assembly: Fully automatic welding equipment is used to weld the door frame and door leaf skeleton. The weld spots are uniform and firm. After welding, grinding and polishing are carried out to ensure a smooth, flat surface free of burrs and false welds.

Fireproof Filling: The interior of the door leaf is evenly filled with fire-resistant rock wool/perlite. The filling is dense and void-free to ensure fire-resistant and thermal insulation performance. The filling materials have passed non-toxicity testing and meet environmental protection requirements.

Surface Treatment: After rust removal and phosphating treatment of the door frame and door leaf, spray coating or galvanizing processes are applied to ensure a uniform surface coating with strong adhesion, corrosion resistance, and fade resistance.

Hardware Installation: Specialized fireproof hardware such as fireproof locks, automatic door closers, and fireproof hinges are installed. The opening and closing performance is adjusted and tested to ensure smooth opening and tight closing.

Finished Product Inspection: Finished products undergo dimensional inspection, opening and closing performance testing, and random sampling for fire performance testing. A test report is issued, and substandard products are strictly prohibited from leaving the factory.

Application Cases

The Strong Steel Fireproof Rated Emergency Exit Door from Mingjue has been successfully applied to various large-scale commercial buildings across the province, earning widespread customer recognition thanks to its high product quality and comprehensive after-sales service:

Case 1 – A large shopping center in Jinan: Over 300 Class B steel fireproof doors were selected for evacuation corridors, stairwells, equipment rooms, and other areas within the shopping center. The product's appearance harmonized with the mall's interior design, offering easy opening and closing. The doors passed fire safety inspections without issue and have operated stably since installation, effectively ensuring escape safety in crowded scenarios.

Case 2 – An office building in Qingdao: Approximately 180 Class A steel fireproof doors were installed in stairwells and as fire compartment partitions. The doors feature excellent fire resistance and sound insulation, meeting the high-end finishing requirements of the office building while balancing fire protection with workplace comfort.

Case 3 – A star-rated hotel in Yantai: A star-rated hotel in Yantai commissioned our company to supply over 120 custom-made steel fire doors featuring fire-resistant glass. Installed in guest room corridors and evacuation stairwells, these doors were color-matched to harmonize with the hotel's interior design—thereby not only meeting fire safety and evacuation requirements but also enhancing the hotel's overall aesthetic appeal—and received high praise from the hotel management.