Explore our high-performance structural systems, custom building components, and architectural doors engineered for residential, commercial, and safety applications worldwide.
Modern Facility
Export Countries
Daily Output Capacity
Expert Technicians
Zhejiang Larsom Door Co., Ltd. is a professional manufacturer specializing in the research, development, production, and global sales of high-quality security doors, armored doors, steel-wood doors, and customized entrance door solutions.
Since its establishment, Larsom Door has been committed to providing customers around the world with safe, durable, and stylish door products. Today, the company operates a modern manufacturing facility covering more than 16,000 square meters, supported by an experienced team of over 160 skilled employees. With advanced production management and efficient manufacturing systems, our daily production capacity exceeds 200 sets of premium doors, enabling us to meet both large-scale projects and customized orders with reliable delivery.
To continuously improve product quality and manufacturing efficiency, Larsom Door has invested heavily in advanced automated production equipment, including CNC laser cutting machines, CNC bending machines, automatic welding systems, high-speed turret punching machines, automatic sanding machines, and modern powder coating production lines. These advanced facilities, combined with strict quality control procedures, ensure that every door meets international quality standards.
Our complete raw material processing and surface treatment pipelines execute high-precision operations under ISO 9001 and international safety standards.
High-precision shearing configurations to cut thick stainless steel plates into exact raw profiles.
Laser-guided automated CNC profile cutters executing intricate designs and lock slot placement.
Heavy-duty hydraulic CNC bending machine configuring exact frame joints and overlapping seals.
High-speed turret punching of hinge pockets, lock sets, and hardware reinforcement zones.
Calibrated pressing to guarantee absolute flat surface values and robust internal structural bonding.
Seamless interlocking mechanics for structural structural integrity across the frame corners.
Fine automated edge finishing to eradicate burrs and refine connection surfaces.
CNC-controlled structural surface detailing and relief carvings for architectural customization.
Advanced UV-cured protective coating layers that prevent chemical decay, weathering, and UV fading.
Across modern architecture, the transition from traditional timber and aluminum alloy entrance structures to heavy-duty Stainless Steel Entrance Doors marks a critical shift in safety engineering. High-performance stainless steel configurations serve as the frontline safeguard for critical infrastructure, luxury residences, commercial complexes, and hazardous industrial locations.
Globally, developers and mechanical engineers prioritize structural integrity and chemical stability. Unlike aluminum or timber, stainless steel possesses high tensile strength and resilience against shear forces, making it highly effective against forced entries. Furthermore, the material's innate resistance to oxidation, rust, and chemical erosion makes it the preferred selection in regions prone to extreme weather, coastal environments with high salt spray, and highly polluted industrial areas.
Understanding alloy behavior is vital for selecting appropriate structural materials. The following table showcases key performance differences between standard entrance door alloys:
| Material Specification | Tensile Strength (MPa) | Corrosion Resistance | Primary Application Fields | Relative Mechanical Cost |
|---|---|---|---|---|
| SUS 316 Marine Grade | ≥ 515 | Outstanding (Chlorides) | Offshore, Marine, Coastal Infrastructure | Premium High Range |
| SUS 304 Standard | ≥ 505 | Excellent (Atmospheric) | High-End Residential, Commercial Entries | Medium to High |
| Galvanized Steel | ≥ 340 | Moderate (Needs Coating) | Hospital Fire Doors, Interior Sub-frames | Standard Eco |
| Aluminum Alloy (6063-T5) | ≥ 186 | Good (Self-Passivating) | Lightweight Windows, Storefront Glazing | Standard Competitive |
Larsom Door is driving innovation with advanced manufacturing methods:
1. Carbon-Neutral Manufacturing Cycles: Utilizing low-carbon steel recycling streams and hydro-electric processing for stainless steel sheets to minimize the structural environmental footprint.
2. Structural Honeycomb and Aerogel Infill: Swapping classic polyurethane infills with high-density mineral wool and nanotech aerogel cores to achieve unmatched acoustic reduction ratings (STC ≥ 48 dB) and high fire-resistance ratings.
We provide tailored configurations for high-traffic public installations, severe coastal conditions, and secure residential buildings.
Specifically developed with SUS316 steel alloy, specialized weatherstripping, and UV-curable polymer films to withstand severe salt spray and coastal humidity without structural degradation.
Reinforced with internal multi-point steel locking bars, anti-drill alloy shielding plates, and thick face sheets designed to meet international anti-burglary standards.
Equipped with internal low-voltage conduits, pre-milled hardware preparations, and electromagnetic locks for seamless integration with access control systems and automated building management.
Find technical answers on material selection, customization options, and global compliance for commercial and residential installations.
Explore our high-performance structural systems, custom building components, and architectural doors engineered for residential, commercial, and safety applications worldwide.
Larsom Door
