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How Long Can a Fire Door Resist Fire and Smoke?

2025-10-11

Fire doors play a crucial role in maintaining safety in both residential and commercial buildings. They act as a barrier between fire and smoke, buying precious time for occupants to escape and for emergency services to intervene. Understanding how long a fire door can resist fire and smoke depends on the materials used, the construction standards, and the testing certifications. At Gaomi Haizhu Door Industry Co., Ltd., we specialize in manufacturing high-performance fire doors that meet international fire safety standards. Our factory focuses on innovation, durability, and reliable fire protection.



Understanding Fire Resistance Duration

The fire resistance rating of a fire door typically ranges from 30 minutes to 180 minutes, depending on its type and intended application. A standard Fire Door is tested under extreme conditions to ensure it can prevent the spread of flames and smoke for the certified time period. Our factory produces doors with ratings of FD30, FD60, FD90, and FD120, meaning they can resist fire for 30, 60, 90, and 120 minutes respectively. These doors are ideal for offices, hotels, hospitals, and industrial buildings where fire safety regulations are strictly enforced.



Factors That Influence Fire Resistance

The performance of a fire door depends on several key elements. Our fire doors are designed with reinforced cores, heat-resistant seals, and precision-engineered frames to maximize protection. The quality of installation also plays a vital role in the actual fire resistance time. Below is a summary of the main structural and performance parameters of our Steel Fire Door products.


Product Name Steel Fire Door
Material Galvanized steel sheet, fire-resistant infill material
Fire Resistance Rating 30–120 minutes (customizable)
Door Thickness 45mm–90mm depending on fire rating
Surface Finish Powder-coated or heat-resistant paint
Frame Type Pressed steel frame with thermal expansion seal
Glass Option Fire-rated glass window optional
Application Commercial, industrial, residential buildings
Certification Tested to BS 476 / EN 1634 standards


Material and Construction Advantages

Our Steel Fire Door is engineered to deliver both strength and efficiency. The steel shell resists warping at high temperatures, while the fireproof core slows heat transfer, ensuring the door maintains structural integrity for its rated duration. Each component, from the hinges to the intumescent seals, is carefully selected and tested in our factory to ensure consistent quality. The combination of advanced materials and precision manufacturing allows our fire doors to perform reliably in emergency situations, protecting lives and property.



Common FAQs About Fire Resistance

Q1: How long can a Fire Door resist fire and smoke?
A1: The resistance time depends on the certification level. Our fire doors can resist fire for 30 to 120 minutes, depending on the model. The higher the fire rating, the longer the door can withstand heat and prevent smoke infiltration.

Q2: What factors affect the lifespan of a Steel Fire Door?
A2: The main factors include the frequency of use, maintenance quality, and exposure to environmental conditions. With proper maintenance and inspection, our fire doors can last over 20 years while retaining their safety functions.

Q3: How to determine the right fire resistance rating for a building?
A3: The required rating depends on local building regulations and the building’s fire compartment design. Our team at Gaomi Haizhu Door Industry Co., Ltd. can assist in selecting the proper fire rating based on your building type and fire safety standards.



Conclusion

Fire doors are a vital part of any building’s fire safety system. Their ability to resist fire and smoke for a specific duration can significantly reduce damage and save lives. By choosing high-quality fire doors from Gaomi Haizhu Door Industry Co., Ltd., you ensure your property benefits from advanced safety engineering and durable materials. Our factory continues to innovate and improve our Fire Door and Steel Fire Door products to meet evolving global standards, providing reliable protection when it matters most.


Oversized Steel Fire Door

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