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China Suppliers - Premium Stainless Steel Fire-Rated Doors from Leading Factory for Safety and Design

Introducing our premium stainless steel fire-rated doors, expertly crafted from Grade 304 stainless steel. These doors provide outstanding fire resistance while delivering the strength and durability synonymous with quality stainless steel products. As a leading manufacturer in China, our factory utilizes advanced techniques to ensure every door meets the highest standards, With a variety of sleek surface finishes—including brushed, mirror-polished, and custom textures—these fire-rated doors are designed to complement any architectural style. Ideal for fire-protected areas, they ensure safety, longevity, and aesthetic appeal. Partner with us, trusted suppliers in the industry, to enhance your space with our exceptional fire-rated door solutions

Product Detail

Product Features

Fire Resistance Performance

The fire-resistant material independently developed by our company filled inside the door leaf, combined with the fire-resistant intumescent sealing strip between the door frame and the door leaf, can prevent flame penetration within the specified fire resistance time, ensuring that the heat insulation performance of the stainless steel fire-resistant door meets the temperature requirements of all levels.

Smoke Sealing

The gap between the door and frame is precisely controlled within 1–3 mm, and combined with a door closer, ensures the door remains securely closed. The fire-resistant intumescent seals maintain elasticity under normal conditions and expand tightly at high temperatures, effectively preventing the spread of toxic smoke through stainless steel fire-rated doors.

Durability & Strength

Constructed from high-grade 304 stainless steel, both the frame and door leaf offer superior corrosion and wear resistance, standing up to humidity, heat, and harsh environments. The reinforced door structure provides excellent impact resistance and long-term stability — resisting deformation or cracking without frequent maintenance — ensuring durability and safety over years of use.

Aesthetic Appearance

Aesthetically, the surface retains the metal's natural texture while allowing for custom finishes such as antique bronze or black coating, breaking the monotony of traditional stainless steel tones and complementing or contrasting with the surrounding architectural palette.

Installation & Maintenance

During installation, the frame is assembled on-site and secured with expansion bolts, with the wall gaps filled using cement mortar for solid anchoring. Ensure a uniform clearance (approx. 3 mm) between the door and frame, and verify the door closer and fire-rated lock function properly after assembly. For routine maintenance, clean the surface using a soft cloth and neutral detergent; avoid steel wool or acidic/alkaline cleaners that might scratch or corrode the surface. Regularly inspect the hardware operation and sealing strips, and replace damaged components as needed to extend the service life of the stainless steel fire door.

Fire Rating

Grade C

Fire integrity ≥ 30 minutes, fire insulation ≥ 30 minutes; Suitable for secondary fire protection areas such as pipe shafts and cable shafts, mainly used to block the spread of small fires.

Grade B

Fire integrity ≥ 60 minutes, fire insulation ≥ 60 minutes; Suitable for areas with moderate fire protection requirements such as stairwells, antechambers, and evacuation routes.

Grade A

Fire integrity ≥ 90 minutes, fire insulation ≥ 90 minutes; Suitable for important areas such as fire control rooms, power distribution rooms, rooms with valuable equipment, and fan rooms.

Others

Fire integrity ≥ 120-180 minutes, fire insulation ≥ 120-180 minutes; Suitable for areas with ultra-Class A fire protection requirements such as chemical workshops, tunnel escape exits, and arms and ammunition depots.

Application Areas

Industrial Facilities

Public Institutions (Hospitals / Schools)

Commercial Buildings (Offices / Hotels / Residences)

Transportation Hubs (Airports / Rail Stations)

Military and Security Facilities

Frequently Asked Questions

What are the primary fire resistance capabilities of these doors?

The doors are filled with an independently developed fire-resistant material and fitted with intumescent sealing strips that expand at high temperatures. This design prevents flame penetration and ensures the door meets the required heat insulation temperature standards.

How do the doors prevent toxic smoke leakage?

The gap between the door and the frame is strictly kept within 1–3 mm. Combined with a reliable door closer and high-temperature expanding intumescent seals, the door maintains tight smoke sealing to stop toxic smoke propagation.

What grade of stainless steel is used, and what are its durability benefits?

The doors are constructed from high-grade 304 stainless steel. This provides excellent corrosion and wear resistance against humidity and heat, as well as superior impact resistance to prevent deformation and cracking.

What are the differences between Grade A, B, and C fire-rated doors?

Grade C provides ≥30 minutes of fire integrity/insulation for pipe and cable shafts. Grade B provides ≥60 minutes for stairwells and evacuation routes. Grade A provides ≥90 minutes for critical areas like fire control and power distribution rooms.

How should the stainless steel fire-rated doors be maintained?

Clean the surfaces with a soft cloth and neutral detergent, avoiding steel wool or acidic/alkaline cleaners. Regularly check the hardware functions and the condition of the sealing strips, replacing any worn components promptly.