Browse our top selection of high-security, fire-retardant, and modern customized entrance doors certified to international engineering standards.
In modern commercial and high-density residential development, a fire-rated door is not merely an architectural asset—it is a critical, life-saving structural barrier. The CE Certification (EN 16034 / EN 14351-1 standards) establishes that an entry door has undergone rigorous laboratory testing to verify its structural integrity, thermal insulation, and smoke-tightness under extreme heat loads.
Zhejiang Larsom Door Co., Ltd. builds these barriers using a combination of heavy-duty galvanized steel, customized timber variants, mineral cores, and intumescent sealants. These elements combine to prevent the passage of flame and hot gasses for periods of 30, 60, 90, or 120 minutes (EI30 to EI120 classifications), providing vital evacuation pathways and compartmentalizing hazard zones.
A world-class industrial pioneer specializing in high-security, armored, and fire-resistant entrance configurations.
Since our founding, Larsom Door has maintained a reputation for safety and quality. Operating from a modern production facility covering more than 16,000 square meters in Zhejiang, China, our team of over 160 skilled technicians leverages high-precision manufacturing technologies.
With an established daily output capacity exceeding 200 premium doorsets, we consistently service complex residential, commercial, and hospitality developments globally. We actively export to over 130 countries and regions across Europe, North America, the Middle East, Central Asia, and Africa.
Our engineering capabilities support flexible OEM and ODM partnerships, translating raw design specifications into certified, code-compliant architectural products.
How Zhejiang Larsom Door integrates advanced metallurgy, automation, and localization to deliver cost-effective performance.
By investing in CNC laser cutters, high-speed turret punching machines, CNC bending machines, and automated welding networks, we guarantee structural tolerances within fractions of a millimeter. This level of precision is essential for fire integrity, ensuring that components align correctly under thermal expansion.
Located within the Zhejiang industrial corridor, we enjoy direct access to primary steel processing, high-density timber resources, and advanced hardware ecosystems. This vertical alignment lowers raw material transport costs and speeds production lead times, allowing us to offer competitive pricing without sacrificing safety.
Larsom designs meet various international standards, including BS 476, EN 1634, and UL 10C. We adjust raw material matrices, frame depths, and hardware provisions to match local specifications across European, Middle Eastern, and North American markets.
A step-by-step view of how Zhejiang Larsom Door fabricates high-durability fire-rated doors from raw materials to final finishes.
Our facility uses a dedicated assembly process (shown above) to produce both high-security armored exterior doors and laminated timber variants. We monitor each stage, from raw sheeting and core calibration to final curing, to ensure structural consistency.
Technical configurations designed for developers, architects, and quantity surveyors to meet global build codes.
| Standard Code | Target Region | Common Ratings Required | Key Hardware/Core Requirements | Larsom Solution Features |
|---|---|---|---|---|
| EN 1634-1 / EN 13501-2 | European Union & Associated Markets | EI30, EI60, EI90, EI120 | Intumescent seals, mineral wool/calcium silicate cores, CE marked hinges & closers. | Fully CE-certified structures, smoke seal integration, European lock-case configurations. |
| BS 476 Part 22 | United Kingdom, Commonwealth, Middle East | FD30, FD60, FD90, FD120 | Perimeter intumescent strips, solid particleboard or mineral core, certified ironmongery. | Timber and steel fire doors matching BS certification; full compatibility with British standard locks. |
| UL 10B / UL 10C / NFPA 252 | North America, Latin America, Middle East | 20, 45, 60, 90, 180 Minutes | Positive pressure testing, hose stream resistance, listed door frames, and self-latching devices. | Armored steel profiles, heavy-gauge steel framing, customized perimeter gaskets for smoke containment. |
| ISO 9001:2015 | Global Quality Standard | Corporate Compliance | Documented quality checks at all production stages, raw material tracking. | Full material batch-tracking and factory output QA reports for every order. |
How fire-rated entry doors adapt to modern smart building demands and high-traffic commercial environments.
Modern developers increasingly require entry doors that combine thermal protection with electronic security. We supply customized mortises compatible with RFID, biometric, and IoT-enabled smart locks. These locks are engineered to release under signal alerts to support emergency egress.
Hotels require acoustic insulation (STC ratings) alongside fire protection. Larsom timber fire doors feature multi-layer acoustic insulation core materials. This design provides both peace of mind during fire events and a quiet guest experience.
For residential entrances exposed to external elements, we supply galvanized steel-wood composite doors. These designs protect against exterior weathering while meeting indoor fire-barrier standards, using materials that resist warping under temperature extremes.
Explore our specialized interior, waterproof, pivot, and heavy-duty steel options to complete your building project.
Expert engineering answers regarding procurement, certification, installation, and custom manufacturing.
Larsom Door
