UL Certified Single Steel Fire Door | 20-180mins Fire Rated Steel Door for Commercial & Industrial Projects

Name: UL Certified Single Steel Fire Door | 20-180mins Fire Rated Steel Door for Commercial & Industrial Projects
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UL Certified Single Steel Fire Door | 20-180mins Fire Rated Steel Door for Commercial & Industrial Projects

Our UL/NFPA/EN/BS/GB certified steel fire door adopts 45mm thick reinforced steel structure, laser welding side seams, with multiple fire core options. Fire resistance ranges from 20 minutes to 180 minutes, matched with full UL fire hardware, widely used in medical, chemical, nuclear, commercial and industrial buildings, support RAL color customization and decorative inlay processing.

UL Standard Reinforced Steel Fire Door Product Introduction

1. Global Fire Certifications & Fire Rating

This steel fire door complies with UL 10B, UL 10C, NFPA-252, EN-1634-1, BS-476-22 and Chinese GB standards, equipped with official UL and EN test certificates.

Available fire resistance grades: 20min, 45min, 60min, 90min, 120min, 180min.

Application Scenarios

Industrial workshops, shopping malls, medical hospitals, chemical plants, nuclear supporting facilities, office buildings, emergency evacuation exit passages.

2. Complete Door Skin Structure Parameter Table

Parameter Item	Specific Technical Specification
Standard Door Thickness	45mm (1-3/4 inch)
Door Skin Base Material	A40 Galvanized Steel Sheet / Cold Rolled Steel Sheet
Optional Door Skin Thickness Gauge	16GA (1.5mm), 18GA (1.1mm), 20GA (0.9mm)
Perimeter Enclosure Channel Steel	16GA (1.5mm) channel steel for top, bottom and vertical sides
Hinge Reinforcement Plate	10GA (3.5mm) thick solid steel plate
Door Closer Reinforcement Plate	12GA (2.5mm) thick steel plate
Lock & Strike Plate Reinforcement	16GA (1.5mm) steel plate
Side Edge Manufacturing Process	Laser seamless welding technology
Maximum Customizable Dimension	Max Width: 5 ft; Max Height: 10' 2.2"
Internal Core Fill Options	Polystyrene core, Honeycomb paper core, Perlite fireproof core, Aluminum silicate wool core

3. Optional Supporting Fire Hardware List

Locking Devices: UL certified panic exit bar, lever handle lock, flush bolt
Opening & Closing Fittings: UL fire-rated hinge, door closer, door coordinator, magnetic door holder
Sealing Accessories: Smoke resistant seal strip, automatic door bottom seal
Vision Components: UL fireproof glass window, top light transom window

4. Customized Appearance Options

Surface Coating: Full RAL color chart customizable for door leaf and door frame
Decorative Craft: Custom metal or wood trim inlay, profile carving design
Door Frame Types: Single rabbet frame, double rabbet frame for different wall installation conditions

5. Core Product Advantages

Ultra Stable Structure: Full surrounding channel steel wrapping + U-shaped steel stiffeners + multi-point thickened reinforcement plates, collision-resistant and deformation-free for long-term daily use.
Universal Global Certifications: One single door meets fire safety codes of North America, EU, UK and China, perfectly matching international construction project bidding requirements.
High Customization Flexibility: Adjust door skin thickness, fire rating, hardware configuration, surface color and decorative details according to project demands.
Multi-functional Integration: Combines fireproof, smoke-proof, sound insulation, thermal insulation and anti-theft performance in one single unit.

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