commercial door hinge with CE UL fire rated

A fire rated door hinge is a architectural butt hinge designed for fire-rated and high-performance door systems where safety, durability, and operational reliability are critical. Unlike standard hinges, a fire rated door hinge is engineered to withstand extreme heat, smoke, and pressure during a fire, ensuring the door remains securely aligned and functions as an effective fire barrier for the required rating period. Built with stainless steel construction and a two ball bearing mechanism, it supports heavy door weights and high-frequency use while delivering smooth, stable, and low-maintenance operation. This type of fire rated door hinge is widely specified for wooden doors, metal doors, and fire-rated doors, making it suitable for commercial buildings, public facilities, industrial applications, and high-end residential projects that demand strict fire safety compliance and long-term performance.

Technical Specifications

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Product Features & Advantages

• BHMA ANSI Grade 2 Durability: This hinge is tested and certified to BHMA ANSI Grade 2 standards, capable of withstanding up to 2.5 million open and close cycles. This level of durability supports over 20 years of heavy commercial use in high-traffic environments such as office corridors, hotels, hospitals, and public buildings. Compared with standard residential or light-duty hinges, Grade 2 performance significantly reduces replacement frequency, maintenance downtime, and long-term operational costs for building owners and contractors.
• UL 10C 3-Hour Fire Protection: Certified to UL 10C with a 3-hour fire rating, the hinge is engineered to withstand temperatures up to approximately 1700°F (927°C) during fire exposure. It meets critical fire safety requirements defined by NFPA 80 and EN 1634, ensuring reliable performance in fire-rated door assemblies. This is especially important for hospitals, schools, and emergency exit zones, where door hardware integrity directly affects occupant evacuation and fire containment.
• Two Ball Bearing System: The hinge incorporates a precision two ball bearing system that reduces operational friction by approximately 50% compared to plain bearing hinges. This design ensures smooth, stable, and quiet door movement, even under heavy door loads. The silent operation makes it particularly suitable for environments such as libraries, conference rooms, hotel guest rooms, and healthcare facilities where noise control is essential.
• Multi-Grade Stainless Steel: To accommodate different environmental conditions and budget requirements, the hinge is available in multiple stainless steel grades. SUS201 is ideal for dry indoor environments, offering cost efficiency for standard commercial projects. SUS304 provides enhanced corrosion resistance for humid spaces such as bathrooms and kitchens. SUS316 delivers superior resistance to salt spray and chemical corrosion, making it suitable for outdoor installations and coastal or marine environments.
• Finish Cohesion: The hinge is designed with finish consistency in mind, allowing seamless coordination with D&D’s door handles, smart locks, and other architectural hardware. Premium surface treatments such as PVD black or satin finishes ensure visual harmony across the entire door set. This cohesive appearance is especially valued in hotels, high-end residential projects, and commercial interiors where unified design language is required.
• System Compatibility: This hinge integrates effortlessly with door closers, panic exit devices, and door seals, enabling contractors and distributors to source complete door hardware solutions from a single supplier. Full system compatibility reduces installation risks, simplifies procurement, and ensures compliance with fire-rated door assembly standards.

Application Scenarios

• Office Corridors – High-Traffic Daily Operation: In office corridors with constant foot traffic, door hinges are exposed to thousands of opening and closing cycles each month. Inadequate hinge design often leads to pin wear, misalignment, and increased operating noise over time. This hinge is engineered with reinforced knuckle geometry and controlled friction tolerance, ensuring stable alignment and smooth movement even under continuous daily use. The optimized structure helps minimize noise transmission in shared workspaces while maintaining consistent performance throughout the service life.
• Hotel Guest Rooms – Acoustic Comfort and Design Consistency: Hotel guest room doors require hinges that operate quietly while maintaining visual consistency across door hardware systems. Poor hinge precision can cause vibration noise and uneven door gaps, directly affecting guest comfort. This hinge integrates precision-machined components with surface finishes matched to common handle and lock systems, supporting cohesive interior design standards. Its smooth motion characteristics help reduce operational noise, contributing to a calm and refined guest room environment.
• Hospital Corridors – Fire Safety and Regulatory Compliance: Hospital doors play a critical role in fire compartmentalization and safe evacuation routes. Hinges used in these environments must not only withstand heavy use but also comply with strict fire-resistance requirements. With a certified 3-hour UL fire rating, this hinge is suitable for fire-rated door assemblies commonly used in healthcare facilities. The structural integrity of the hinge is maintained under elevated temperatures, supporting controlled fire spread and compliance with hospital safety regulations.

Certifications and Compliance

• BHMA ANSI Grade 2: Certified for 2.5 million operational cycles, meeting industry benchmarks for commercial hinge performance.
• UL 10C Fire Rating: Provides 3-hour fire protection under UL testing standards, ensuring compliance with NFPA 80 and EN 1634 fire door regulations.
• ISO 9001: Manufactured under a certified ISO 9001 quality management system, ensuring consistent production standards and traceability.
• Salt Spray Test: SUS304 and SUS316 versions successfully pass 240-hour salt spray tests, confirming strong corrosion resistance for humid and outdoor environments.
• SGS Audited: The manufacturing facility is audited by SGS, verifying ethical practices, production capability, and quality assurance systems.

Customization Options

• Material Upgrades: Customers can select stainless steel grades based on environmental exposure and budget considerations, ensuring optimal performance and cost efficiency.
• Finish Customization: A variety of surface finishes, including PVD black and gold, are available to match door handles and other architectural hardware.
• Size Modifications: Custom hinge dimensions can be produced to accommodate extra-thick or non-standard doors commonly found in commercial or special projects.
• OEM/ODM: Private-label branding, custom packaging, and 3D model development are available to support distributors, project contractors, and brand owners.

Production Process & Quality Control

1. Material Testing: Raw materials undergo spectroscopic analysis to verify stainless steel composition and ensure compliance with specified grades.
2. CNC Machining: Advanced CNC machining ensures precision-cut components with tolerances controlled within ±0.01mm, supporting smooth bearing integration.
3. Heat Treatment: Components are heat-treated at approximately 1050°C to enhance mechanical strength and meet ANSI and UL performance requirements.
4. Performance Testing: Random samples undergo rigorous testing, including 2.5 million cycle durability tests, fire resistance tests, and load-bearing evaluations.
5. Final Inspection: Each hinge is subjected to 100% inspection covering dimensions, surface finish, assembly accuracy, and functional performance before packaging.