Engineered to deliver exceptional security, thermal efficiency, and contemporary style. Designed for extreme durability.
Redefining Structural Integrity and Aesthetic Excellence in the Global Door Manufacturing Industry.
Zhejiang Larsom Door Co., Ltd. is a leading professional manufacturer specializing in the research, development, production, and global distribution of high-quality security doors, armored doors, steel-wood hybrid units, and custom architectural entryways. Our dedication to safety, performance engineering, and state-of-the-art aesthetics has cemented Larsom as a trusted partner for commercial contractors, real estate developers, and international wholesale distributors.
Established as an industry leader, Larsom operates a modernized manufacturing facility covering more than 16,000 square meters, powered by a dedicated task force of over 160 highly skilled technicians and engineers. With a daily capacity exceeding 200 premium custom units, we fulfill complex project designs and high-volume orders with unmatched precision and speed.
Modern architecture demands materials that unify energy conservation, extreme durability, and clean styling. Traditional wood doors present risks of rotting, warping, and frequent maintenance under varying humidity levels, while steel entryways can suffer from oxidation (rust) in coastal environments. This material-science gap has propelled high-performance aluminum panel doors to the forefront of architectural specifications.
Our OEM/ODM aluminum doors utilize high-grade 6063-T5 aluminum alloys, delivering an optimized strength-to-weight ratio. Engineered with thermal breaks (polyamide insulation strips) and high-density polyurethane cores, these structures drastically minimize heat transfer. This structural profile helps developers and architects meet strict carbon reduction targets and stringent building codes, including NFRC standards and European U-value regulations.
Every Larsom door is fabricated using automated, high-precision equipment to secure tight dimensional tolerances, structural strength, and pristine finishes.
Heavy-duty shear systems slice raw metal sheets down to strict dimensions, laying the groundwork for perfect alignment.
High-power laser CNC machines execute complex cutouts and lock geometries with sub-millimeter precision.
Automated CNC bending presses form critical structural folds and frame profiles, preserving material strength.
High-speed turret punch systems generate essential hardware slots, hinges, and secondary anchor locations.
High-pressure machinery bonds layers of aluminum, insulation, and steel reinforcement, preventing core separation.
Meticulous joining and assembly of core components guarantee seamless joints and zero structural play.
Refining raw edges prepares all profiles for secondary finishing and flawless coating adhesion.
Creating detailed decorative lines, custom patterns, or logos to match architectural designs.
Applying electrostatically charged paint cured under UV light for extreme wear resistance.
Procuring large quantities of architectural doors introduces multi-layered risks, from dimensional variance to logistics delays and missing certifications. Commercial builders and real estate developers cannot afford project delays caused by mismatched hinge clearances or incorrect wind load ratings. As an experienced OEM/ODM manufacturing partner, Larsom addresses these pain points directly.
| Specification Parameter | Aluminum Panel Doors | Solid Timber Doors | Standard Steel Doors |
|---|---|---|---|
| Corrosion Resistance | Excellent (Non-rusting) | Poor (Rot/Warp risk) | Moderate (Rust risk) |
| Thermal U-Value | Low (With Thermal Break) | Moderate | High (Thermal bridging) |
| Maintenance Needs | Extremely Low | High (Frequent sealing) | Moderate |
| Bespoke Customization | High (Flexible Extrusions) | High (Expensive) | Limited (Fixed press tools) |
International building regulations vary by region. We adapt our production lines to meet local building codes, structural demands, and security requirements:
We configure products with impact-rated tempered glass, reinforced frames, and heavy-duty pivot gear designed to pass severe coastal wind load and missile impact tests.
For European projects, we supply doors meeting RC2/RC3 burglar resistance and certified U-value ratings using multi-point hook locks and thermal insulation cores.
To meet hotel and apartment building demands, we offer doors engineered with intumescent fire seals and steel-reinforced cores, certified for up to 120 minutes of heat and smoke containment.
Answering crucial engineering, compliance, and logistics questions from professional buyers and structural engineers.
6063-T5 aluminum alloy offers superior mechanical properties, excellent surface finish compatibility, and high corrosion resistance. The T5 temper indicates it has been artificially aged, boosting its yield strength and ensuring the frame maintains strict dimensional stability under severe wind loads and thermal expansion cycles.
Aluminum is a natural heat conductor. To prevent thermal bridging, we place a polyamide insulating barrier between the exterior and interior aluminum profiles. This break, combined with a polyurethane foam or aerogel-infused core, significantly reduces the heat transfer coefficient (U-value) to comply with modern green building standards.
We offer comprehensive customization options, including door sizes up to massive pivot entryways, custom powder coating colors (RAL charts), wood-grain transfers, integrated LED smart handles, biometric keyless locks, double or triple glazing options, and specific structural reinforcement plates.
Our QC process includes multiple checkpoints: raw extrusion inspection, welding alignment, hardware fitment verification, coating thickness tests using digital gauges, and pre-packaging balance checks. We also perform cycle testing on hinges and locksets to guarantee reliable operation.
Architectural entrance doors featuring heavy-duty hinges, minimal frames, and engineered security options for luxury residential and commercial buildings.
Larsom Door