Double Leaf Fire Resistant Door
✅ Double-leaf fire resistant door with 2-hour fire rating, meets EN 1634-1, UL 10B & GB standards.
✅ Heavy-duty galvanized steel construction, excellent corrosion resistance for Middle Eastern climates.
✅ Double-leaf design for wide openings, ideal for large commercial/industrial spaces.
✅ Fully customizable sizes, opening directions, hardware & finishes available.
✅ Fast lead time: 10-15 working days for standard orders, expedited service available.
✅ Perfect for large public buildings, factories, warehouses & high-traffic areas.
Description
The Double Leaf Fire Resistant Door is a large-opening, high-capacity fire safety door independently developed and produced by Longzhengsheng, a national high-tech enterprise and Hebei “Specialized, Refined, Characteristic and Novel” manufacturer with over 10 years of experience in fire safety door production. Designed for large-scale commercial, industrial and public building scenarios requiring wide passage, this product combines 2-hour fire resistance with double-leaf opening functionality, providing reliable fire containment while meeting large-item access and high-traffic passage needs. It is widely used in large warehouses, factories, shopping malls, hospitals and public facilities in the Middle East, with excellent durability and climate adaptability, and has been highly recognized by overseas customers.
Core Technical Parameters
- Product Type: Double Leaf Fire Resistant Door (2-leaf flat opening fire door)
- Fire Rating: 2 Hours (120 Minutes) fire resistance, fully compliant with GB 12955, EN 1634-1, UL 10B international fire safety standards
- Structure: Double-leaf split flat opening design, with main and auxiliary leaf linkage, automatic closing function (customizable)
- Standard Sizes: 2100×1200mm, 2100×1500mm, 2400×1800mm (full custom size support, max width up to 3000mm)
- Door Thickness: 50-55mm (reinforced version 60-70mm customizable)
- Opening Mode: Manual flat opening / automatic door closer linkage (custom optional)
- Production Lead Time: 10-15 working days for standard orders, expedited service available for urgent projects
- Thermal/Sound Insulation: Class 7 thermal insulation, ≥35dB sound insulation performance (optional upgrade)
Material & Manufacturing Process
- Panel & Frame Material: The door leaf is made of 1.0-1.5mm thick industrial-grade galvanized steel plate, and the door frame is made of 1.2-1.5mm thick reinforced steel plate. The hinge, lock and door closer installation positions are reinforced with 3mm steel plates to ensure structural stability under long-term high-frequency use.
- Core Filling: High-density fireproof rock wool core (perlite optional), non-combustible, high-temperature resistant, effectively blocking flame spread and heat transfer, meeting 120-minute fire integrity requirements.
- Sealing System: High-temperature fire-expandable sealing strips are installed around the door leaf and frame. When encountering high temperature above 60℃, the strips expand rapidly to fill the gap, effectively blocking smoke and toxic gas penetration.
- Linkage Structure: The double-leaf door adopts a dedicated linkage door closer, which ensures that the two leaves close in sequence during a fire to form a complete fire seal, avoiding fire spread caused by inconsistent closing.
- Surface Treatment: Anti-corrosion, anti-rust and dust-proof powder coating, suitable for high-temperature, dry and dusty environments in the Middle East, with long-lasting color and durability.
- Production Craft: Produced in Longzhengsheng’s two large production bases, using laser cutting and automatic welding production lines, managed by ERP system, with precise size and consistent craftsmanship, suitable for large-scale engineering orders.
Product Advantages
- Wide Opening Design: Double-leaf split opening provides larger passage width, suitable for large equipment access and high-traffic scenarios, solving the problem of narrow passage in single-leaf fire doors.
- Dual Fire & Safety Protection: Meets 2-hour fire resistance requirements while providing sound insulation and thermal insulation, improving building comfort and safety.
- Industrial-Grade Durability: Thickened steel structure and reinforced hinges ensure long-term stable operation under high-frequency opening and closing, suitable for heavy-use industrial and commercial scenarios.
- Full Customization: Supports custom size, opening direction, door closer type, surface color, and additional functions such as vision panels, to meet the individual needs of different projects.
- Climate Adaptability: Anti-corrosion, anti-high temperature and anti-dust design, adapting to harsh climate conditions in the Middle East, with stable performance and long service life.
- Fast Delivery & Quality Assurance: Standard orders have a 10-15 working day lead time, with sufficient production capacity to support large-scale engineering orders. All products pass 100% pre-shipment inspection, with ISO9001 quality system certification.
Company Strength Guarantee
Longzhengsheng is a leading high-tech enterprise integrating R&D, production, sales and service, with two major production bases covering 33333㎡ and a construction area of 26545㎡. We have 238 professional employees, 16 national utility model patents, and two registered trademarks “Longzhengsheng” and “Deruizhongdun”. We have rich experience in serving the Middle East market, with a complete production, quality control and after-sales service system, providing stable, high-quality fire door products and customized solutions for customers.
Application Scenarios
This double leaf fire resistant door is widely used in the following scenarios:
- Large industrial factories, production workshops, logistics warehouses
- Commercial complexes, shopping malls, large supermarkets, exhibition halls
- Hospitals, schools, government buildings, public facilities
- Power plants, chemical plants, large-scale infrastructure projects
- High-traffic areas requiring wide passage and fire safety protection
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