Fire Rated Steel Door

How Do Fire Rated Steel Doors Provide Fire Protection?

A fire door is not designed to be completely impervious to fire; rather, it achieves its protective effect through its structural design. For public venues—particularly in collaborative projects such as hospitals—the installation of fire doors is of paramount importance.

The primary step in fire protection is the containment of flames. The steel body of the door is non-combustible, effectively preventing flames from penetrating directly through it.

The interior of the door is filled with advanced, eco-friendly fire-retardant materials, which further retard heat conduction. This mechanism effectively controls the rate at which the temperature rises on the side of the door opposite the fire source.

Furthermore, the door seams feature a sealed design and are fitted with intumescent smoke seals. These seals expand when exposed to heat, thereby preventing the diffusion of toxic smoke and fumes.

How to Choose the Right Fire Rated Steel Door for Your Project?

1. Determine the Fire Rating

When selecting a fire-rated steel door, the primary parameter to consider is its fire rating. OWNIC offers both Class A and Class B options.

Class A (1.5h – 2.0h): Suitable for doors located in firewalls, critical equipment rooms, and storage facilities housing flammable or explosive materials.

Class B (1.0h): Suitable for evacuation stairwells, elevator lobbies, and doors connecting hospital wards to corridors.

In addition, we offer a full range of custom fire ratings compliant with international standards, ensuring you can easily pass local fire safety inspections.

2. Select the Opening Mechanism and Dimensions

You may choose between single-leaf or double-leaf doors. Single-leaf doors are recommended for standard offices, utility shafts, or passageways less than 1100mm in width. Double-leaf doors are recommended for main hospital corridors and entrances intended for stretcher access.

3. Configuration of Core Hardware Components

The functionality of a fire door relies heavily on the stability of its hardware components under high-temperature conditions. Whether in a normally closed state or during a fire emergency, the fire door must close automatically; OWNIC includes high-quality, fire-rated door closers as a standard feature.

Fire-rated locks must possess inherent fire-resistant properties and be capable of being opened rapidly from the interior side in an emergency.

When ordering custom double-leaf doors, a door coordinator is a mandatory requirement; improper closing sequence of the door leaves can compromise the fire seal's integrity.

4. Environmental Suitability and Aesthetic Customization

For applications in operating rooms or corridors, we recommend adding a fire-rated glass vision panel to allow for visual monitoring of fire conditions without the need to open the door.

OWNIC offers a selection of hundreds of RAL color finishes, allowing fire-rated doors to transcend a purely industrial aesthetic and seamlessly blend into the warm and welcoming environment of a hospital.