This stainless steel fire-insulated door panel features a
high-grade stainless steel outer skin and a non-combustible rock
wool core, delivering superior fire resistance (up to 1000 °C),
thermal insulation, and structural integrity. Precision CNC laser
cutting, press-brake forming, and TIG welding ensure airtight,
seamless construction with ±0.1 mm tolerances—ideal for demanding
industrial and commercial fire-rated door systems.
Overview
Our Stainless Steel Fire-Insulated Door Panel is engineered to meet
stringent fire-protection and thermal-insulation requirements in
buildings, cleanrooms, and industrial facilities. The panel’s
stainless steel cladding provides durability and corrosion
resistance, while the rock wool core offers non-combustible
insulation, helping doors achieve up to EI₁₄₅ fire ratings.
Key Features
1. Non-Combustible Core: Rock wool (stone wool) core withstands
temperatures up to 1000 °C without flame propagation, ensuring
extended fire-resistance periods.
2. High-Grade Stainless Steel: Outer and inner skins of SUS304 or
SUS316L steel resist corrosion, impact, and wear in harsh
environments.
3. Seamless Fabrication: CNC laser cutting and press-brake forming
achieve ±0.1 mm dimensional accuracy, while full-penetration TIG
welding creates airtight, leak-proof seams.
4. Thermal Insulation: Core thermal conductivity as low as 0.036
W/m·K reduces heat transfer, improving energy efficiency and
occupant comfort.
5. Acoustic Performance: Stone wool core also provides sound
attenuation up to RW 45 dB, reducing noise transmission in
multi-use facilities.
6. Customizable Profiles: Available in various thicknesses (50–100
mm), sizes, finishes (brushed, electro-polished), and edge profiles
to fit project specifications.
Technical Specifications (Example Model)
Parameter Specification
Core Material Stone wool (rock wool)
Steel Skin SUS304 or SUS316L
Panel Thickness 50 mm / 75 mm / 100 mm
Fire Rating EI₉₀–EI₁₈₀ (up to 180 minutes)
Thermal Conductivity 0.036 W/m·K
Acoustic Rating RW up to 45 dB
Dimensional Tolerance ± 0.1 mm
Surface Finish Brushed #4 / Electro-polished
Joint Type Tongue-and-groove or welded butt joint
Applications
1. Fire-rated entry and interior doors in commercial buildings,
hospitals, and schools
2. Cleanroom and laboratory door systems requiring hygienic,
corrosion-resistant panels
3. Industrial safety doors in chemical plants, power stations, and
manufacturing facilities
4. High-security doors in data centers and critical infrastructure
Our Stainless Steel Fabrication Capabilities
1. CNC Laser Cutting & Punching: High-precision profiling of skins
and frames with minimal edge burrs.
2. Press-Brake Forming: Accurate bending up to 6 m lengths with ±
0.1 mm repeatability.
3. TIG & MIG Welding: ASME-grade welds, full penetration, and
minimal heat-affected zones.
4. Surface Treatments: Electropolishing, passivation, bead blasting
for hygienic, corrosion-resistant finishes.
5. R-Value & Fire Testing: In-house and third-party testing for
thermal and fire performance per EN 1634-1 and UL 10C standards.
rockwool.com
Why Partner with Us?
1. Over 10 years of experience in stainless steel sheet-metal
fabrication for fire-rated and technical door systems.
2. ISO 9001:2015 and EN 1090 certification ensure consistent
quality and regulatory compliance.
3. Custom OEM/ODM design support from concept through prototyping
to mass production.
4. Global export expertise, with successful shipments to Europe,
North America, and Asia.
5. Comprehensive technical support, documentation, and after-sales
service for seamless project delivery.
OEM/ODM Customization Available
Submit your CAD drawings (STEP/DWG/PDF) or samples. Our engineering
team will optimize the door panel design for fire performance,
thermal insulation, and manufacturability—delivering tailored
solutions within 48 hours.
