double-leaf steel fire door

A double-leaf steel fire door is a fire-resistant door composed of two steel door leaves, offering excellent fire protection and structural durability. Here’s a detailed introduction:

1. Fire Resistance

Double-leaf steel fire doors are designed with steel door panels and fire-resistant core materials. These doors can effectively block flames, smoke, and heat during a fire, with fire ratings typically ranging from 60 minutes to 90 minutes or longer. They play a crucial role in delaying the spread of fire, providing more time for evacuation and firefighting efforts.

2. Material and Structure

The door leaves are made from high-quality steel, which ensures both strength and durability. Inside, fire-resistant materials like fireproof boards or mineral wool are used to enhance the door’s ability to withstand high temperatures without warping or collapsing. The doors are usually equipped with fire seals, which expand when exposed to heat to prevent smoke and fire from passing through.

3. Applications

These doors are widely used in industrial buildings, commercial facilities, warehouses, and areas requiring large door openings for access, such as loading docks and emergency exits. They are also suitable for use in stairwells, corridors, and other fire exit routes to prevent the spread of fire between different sections of a building.

4. Opening Mechanism

A double-leaf steel fire door typically features two hinged door leaves that can either open together or function independently. One leaf may act as the active door for regular use, while the other remains closed and only opens when necessary. They often include automatic closing devices or fire door closers to ensure the doors shut automatically during a fire.

5. Compliance with Standards

Double-leaf steel fire doors are manufactured to meet local fire safety standards. For instance, they comply with the 3C certification in China, and some models may adhere to UL or other international fire safety standards, ensuring that they offer reliable protection during fire emergencies.

In summary, double-leaf steel fire doors are essential safety installations in many modern buildings, combining strength, fire resistance, and effective smoke sealing to enhance the overall fire safety of the structure.

Double leaf Steel Fire Door

Application Scenarios

1. Large Buildings: Suitable for large public places such as office buildings, shopping malls, and hospitals where wider passageways are needed.

   

2. Freight Passages: Ideal for warehouses and industrial facilities, facilitating the loading and unloading of goods.
3. Emergency Exits: The double-leaf design allows for quick evacuation of multiple people in emergencies.
4. Lobbies and Corridors: Used to connect different areas with large openings, providing convenient access.

Features

• Composed of two symmetrical door leaves that can open simultaneously, suitable for areas requiring wide openings.
• Provides a high level of fire protection, typically with longer fire resistance times.

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Single-leaf Steel Fire Door

Application Scenarios

1. Small Openings: Suitable for standard passageways in offices, stores, and residential areas.
2. Internal Dividers: Can be used to separate different functional areas, such as between offices and storage rooms.
3. Emergency Exits: Suitable for locations requiring a single evacuation route.

Features

• Composed of one door leaf, with a simple design that fits small openings.
• More flexible for installation and use in limited space.

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Main Differences

1. Structure:
   • Double-leaf Steel Fire Door: Consists of two door leaves, providing a larger passage suitable for areas requiring wide openings.
   • Single-leaf Steel Fire Door: Consists of one door leaf, suitable for smaller openings.
2. Traffic Capacity:
   • Double-leaf Doors can accommodate multiple people passing through simultaneously, making them suitable for high-traffic areas.
   • Single-leaf Doors typically suit single or small group passage.
3. Application Scenarios:
   • Double-leaf Doors are suitable for large public places and areas with high emergency evacuation needs.
   • Single-leaf Doors are better for small openings and internal dividers.
4. Installation Flexibility:
   • Double-leaf Doors require more installation space and supporting structures.
   • Single-leaf Doors are more flexible to install and occupy less space.

By understanding these differences, customers can choose the appropriate fire door based on their specific needs and usage scenarios.