Customized Stainless Steel Fabrication Services Thermal Insulation Fireproof Door Panels

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.