Thematic

Fireproof Steel Door Structure: Factors You Need to Know

13/09/2024

Fireproof steel doors are one of the most important solutions to protect buildings and people from risks caused by fire and explosion. During the construction of buildings, especially apartments, high-rise buildings, and industrial parks, the installation of fireproof steel doors is strictly required to meet fire safety standards. So what are the components of a fireproof steel door and how does it work? Let’s find out the details below.

Fireproof steel door

Outer Steel Layer

Layers of fireproof steel doors

The outer steel layer of the fireproof door is made from thick steel plate, usually from 1mm to 2mm depending on the specific requirements of each type of construction and the desired fire resistance time (60 minutes, 90 minutes, or 120 minutes). This steel plate has good heat resistance and resists the effects of fire for a certain period of time, preventing flames and high temperatures from penetrating into other areas.

Steel plates are often coated with electrostatic paint to prevent corrosion and increase the durability of the door, helping the door maintain fire protection efficiency for many years of use.
Fireproof steel doors have a sturdy design, are not easily deformed under the influence of high temperatures, which is an important factor to ensure safety when a fire occurs.

Inner Insulation Layer

One of the important factors that helps fireproof steel doors operate effectively is the inner insulation layer. Insulation material is used to fill the space between two steel plates to prevent heat transfer through the door.

The most common fireproof materials used are glass wool or mineral wool, which are resistant to high temperatures and do not burn when exposed to fire.
Some high-end fireproof steel doors are also equipped with FireShieldPro KHS.HF.M insulation panels, which enhance insulation and protect surrounding areas from the effects of high temperatures for long periods of time.

Fireproof Gasket

Fireproof gasket is another important component in the structure of fireproof steel doors. This is a gasket layer installed around the edge of the door, which automatically expands when the surrounding temperature reaches 200-300°C.

As the gasket expands, it creates a tight barrier that prevents smoke, fire, and toxic gases from entering through the gaps in the door, enhancing the fire door’s protective properties.
This feature is especially useful in large buildings such as apartments, factories, or offices where toxic smoke can spread very quickly in the event of a fire.

Fire Hinges and Locks

Doors not only require a sturdy construction made of steel and fire-resistant materials, but also require accompanying accessories, including fire-resistant hinges and locks. These accessories are made from special heat-resistant materials, allowing the door to operate smoothly and effectively even in high temperature conditions.

Fire-resistant hinges: Designed to withstand high temperatures without deforming or losing their ability to function. These hinges must ensure that the door is always closed to prevent the spread of fire.
Fire-resistant locks: Equipped with an automatic locking mechanism, ensuring that the door is always closed and locked in the event of a fire. The lock must be designed to be easily opened from the inside, allowing people to escape quickly.

Fire-Resistant Standards for Steel Doors

Fire-rated steel doors must comply with strict fire-resistance standards prescribed by the competent authorities. In Vietnam, these standards are stipulated in legal documents on fire prevention and fighting such as QCVN 06:2020/BXD.

Doors must pass tests on heat and smoke resistance for a period of 60 minutes to 120 minutes.
In addition, doors must ensure smoke resistance, because smoke is the main cause of death in fires.

Large constructions such as apartments, office buildings, and industrial parks all require doors to strictly comply with these standards to ensure maximum safety.

Integration with Fire Alarm and Fire Fighting Systems

Today, modern doors are often integrated with automatic fire alarm and fire fighting systems. When the system detects smoke or fire, the door will automatically close, preventing the spread of fire and smoke, while facilitating evacuation and rescue.

Fire-resistant rolling doors and fire-resistant shutters are often integrated with fire alarm systems to automatically close when an incident occurs.
Modern door lines can be connected to a central control system, allowing remote monitoring and control of the door in emergency situations.

Advantages of Fire-Resistant Steel Doors

Steel doors using KH Shield panels

Fireproof steel doors bring many benefits to construction projects:

Maximum safety: Prevent fire, smoke and toxic gases from spreading, protecting human life and property.
High durability: With a thick steel structure, the door has good resistance to high temperatures and is not deformed.
Aesthetics: Currently, doors come in many different designs and colors, suitable for the design requirements of many different types of projects, from apartments to industrial and commercial areas.

KH Shield – Optimal Fireproof Steel Door Solution for Your Project

Choosing a fireproof door is a decisive factor in protecting buildings and people from the risk of fire and explosion. With many years of experience and reputation in the field of fire prevention and fighting, KH Shield is proud to provide high-quality fireproof door solutions and fireproof materials, meeting the most stringent standards.

To ensure the safety of your project, please contact KH Shield immediately via Hotline: 0909 668 666 for advice and to choose the most suitable solution for your project!