Precision Engineered Systems
High-Performance Aluminum Net, Screen & Barrier Door Portfolio
Engineered with primary 6063-T5/T6 architectural aluminum alloy extrusions, 304/316 marine-grade security stainless steel mesh, and multi-point security mechanics. Seamlessly integrating micro-ventilation, insect barrier properties, and forced-entry deterrence.
Information Gain Whitepaper
Engineering Architecture of Modern Aluminum Net Doors
A technical teardown of alloy metallurgy, marine stainless steel woven mesh mechanics, anti-jemmy extrusion matrices, and surface chemistry.
Alloy Substrate: 6063-T5 / T6 Extrusions
Unlike commercial residential scrap extrusions, export-certified aluminum net doors utilize virgin electrolytic A00 aluminum billet. Homogenized 6063 alloy heat-treated to T5 or T6 temper provides yield strength exceeding 160 MPa and tensile strength of 205 MPa. Profile wall thicknesses strictly maintain 1.6mm to 2.2mm structural profiles, ensuring zero frame deflection across monumental apertures exceeding 3.0 meters.
304 / 316 Marine-Grade Mesh Metallurgy
The screen core utilizes high-tensile 304 or 316 austenitic stainless steel wire (0.80mm - 1.0mm diameter) woven with precision square apertures (11x11 or 12x12 mesh per inch). With tensile strengths surpassing 900–1150 N/mm², the mesh resists continuous knife-shearing, razor punctures, dynamic kick-ins, and blunt crowbar jemmy attacks while preserving over 68% natural illumination and acoustic airflow.
Patented 4-Side 6-Point Multi-Point Locking
DERCHI's independently patented 4-side 6-point multi-locking mechanism revolutionizes traditional single-latch vulnerabilities. Actuated via a single ergonomic handle throw, heat-treated stainless steel mushroom cams and hardened locking bolts engage simultaneously into recessed perimeter chassis keeps. This distributes mechanical impact loads uniformly around the structural frame during unauthorized entry attempts.
| Performance Indicator | Standard Fly Screen Door | Commercial Barrier Net Door | DERCHI Heavy-Duty Security Net Door |
|---|---|---|---|
| Alloy Metallurgy | Recycled / Non-structural 6063 | Primary 6063-T5 (1.2mm wall) | A00 Pure Ingot 6063-T6 (1.8mm - 2.2mm) |
| Screen Core Material | Fiberglass / Nylon / 201 SS | Standard 304 SS (0.6mm wire) | 304 / 316 Marine Mesh (0.8mm - 1.0mm) |
| Knife Shear Resistance | Fails under 50 N load | Partial compliance (AS 5039) | Passes AS 5041 (Consecutive 3x Knife Shearing) |
| Anti-Jemmy & Impact | 0 Joules (Insect only) | Up to 50 Joules dynamic load | Exceeds 100 Joules (Dynamic Impact Tested) |
| Surface Protection | Standard Electrostatic Spray | Commercial Anodizing (10μm) | AkzoNobel / PPG Fluorocarbon Powder Coat (80μm) |
| Locking Integration | Single zinc-diecast latch | Dual-point latching | Patented 4-Side 6-Point Security System |
Global Manufacturing Infrastructure
Why International Developers Specify DERCHI Fenestration Systems
Headquartered in Nanhai District, Foshan—the global epicentre of high-end aluminum extrusion—Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) combines industrial-scale capacity with Swiss and German robotic fabrication tolerance controls.
180,000 m² Mega Industrial Campus
Our centralized manufacturing ecosystem integrates automated 5-axis CNC machining centers, robotic precision corner crimping, and automated electrostatic powder coating lines. Producing over 1,000,000 m² annually, we provide ironclad delivery lead-times for multi-unit high-rise complexes and master-planned villa developments.
Global Compliance: NFRC, CSA, Miami-Dade NOA & CE
Every fenestration export is tested by internationally accredited third-party laboratories. From NFRC thermal metrics (U-factors down to 0.22) and Canadian CSA atmospheric requirements to Miami-Dade County hurricane missile-impact benchmarks and European CE EN-14351 certifications, we eliminate regulatory border friction.
Xinhua News Agency "China Famous Brand"
Awarded top-tier brand recognition by China's national media authority Xinhua News Agency, DERCHI maintains a premier corporate reputation for zero-defect production governance, ethical raw material procurement, and verified ESG environmental compliance.
Over 100 Intellectual Property Patents
Backed by an in-house R&D engineering division of over 30 structural engineers, fenestration physicists, and CAD/BIM modelers. Holding over 100 national utility and invention patents, we pioneer solutions in thermal acoustic bridging, concealed flush tracks, and integrated security meshes.
End-to-End International B2B Project Service Ecosystem
We supply more than bare products. DERCHI assigns dedicated project engineers to convert preliminary architectural sketches into millimeter-perfect metric/imperial shop drawings. Our services include mock-up sample delivery, structural wind-load finite element calculations, international ocean pallet crating, and remote AR/on-site installation supervisor dispatch.
Market Intelligence 2025–2030
Global Procurement Trends in Aluminum Net & Security Doors
Strategic analysis for procurement directors, façade consultants, and regional fenestration distributors.
1. The Shift from Passive Screens to Structural Barrier Systems
Historical architectural screening focused almost exclusively on basic insect interception through lightweight fiberglass or nylon meshes tensioned into fragile roll-formed aluminum profiles. However, rising global property security requirements, extreme climatic wind disturbances, and urbanization density have transformed commercial search and procurement intent.
Modern developers are rapidly standardizing on heavy-gauge extruded aluminum barrier doors featuring woven 304/316 marine-grade mesh. These hybrid systems serve a quadruple architectural role: impenetrable burglar barrier, natural passive ventilation conduit, 100% insect boundary, and secondary storm debris screen. Sourcing directors prioritizing this category reduce overall building envelope cost by removing the redundant requirement for external burglar bars or cumbersome iron grilles.
Strategic Sourcing Takeaway: Total Cost of Ownership (TCO)
Specifying a dual-purpose aluminum security net door yields an average 34% cost efficiency compared to installing separate fly screens plus secondary motorized security shutters or decorative ornamental ironwork, while significantly enhancing aesthetic facade minimalism.
2. Biophilic Design & Thermal Energy Decarbonization
As stringent building energy codes (such as ASHRAE 90.1, California Title 24, and the EU Energy Performance of Buildings Directive) mandate drastic reductions in HVAC operational loads, biophilic natural ventilation has emerged as an architectural priority. Aluminum security net doors allow cross-ventilation during temperate evenings without compromising perimeter security or introducing vectors for vector-borne diseases.
Furthermore, the solar shading coefficient (SC) of fine-woven black electrostatic marine mesh intercepts up to 28% of direct solar infrared heat radiation before it impacts internal glass panes. This reduces solar heat gain coefficients (SHGC) during peak daylight hours, actively decreasing residential cooling loads.
3. Smart Architectural Integration: Biometrics & Concealed Motorization
The convergence of architectural fenestration and home automation is accelerating. Procurement data indicates a 42% year-over-year surge in requests for screen and pivot net doors engineered for electro-mechanical smart locking mechanisms.
Leading manufacturers now engineer internal raceways inside the 6063-T6 aluminum extrusion to house concealed wiring conduits, magnetic contact sensors, and motorized multi-point latch retractors. This allows seamless integration into enterprise building management systems (BMS), keyless RFID access controls, and biometric smart home ecosystems.
4. Powder Coating Chemistry & High-Salinity Corrosion Defense
Coastal resorts, luxury island villas, and high-salinity marine environments represent major growth sectors for aluminum net doors. However, galvanic corrosion between dissimilar metals (specifically, the contact boundary between the aluminum frame and the stainless steel mesh) has historically created field failures.
DERCHI's engineering team eliminates galvanic oxidation through a proprietary dual-barrier methodology: fully insulating EPDM / PVC co-extruded isolation gaskets preventing metal-to-metal continuity, followed by automated pre-treatment and electrostatic application of super-durable architectural powder coatings (meeting AAMA 2604/2605 and Qualicoat Class 2 specifications). This delivers over 3,000 hours of continuous neutral salt spray resistance.
Standardized Protocol
From Architectural Blueprints to On-Site Installation
Our rigorous 8-stage engineering delivery workflow guarantees zero-defect manufacturing and flawless job-site integration across global borders.
01
Architectural Blueprint Audit
Our engineering team analyzes project CAD, BIM models, elevation schedules, and local hurricane/seismic code parameters to eliminate dimensional conflicts.
02
System R&D & Optimization
Thermal breaks, mesh tensile selections, and multi-point lock matrices are custom-configured for the project's specific climatic exposure.
03
Commercial Engineering Proposal
Comprehensive transparent quotations detailing alloy certification, glass U-values, hardware schematics, and volume freight schedules.
04
Shop Drawing Finalization
1:1 cross-sectional CAD drawings showing rough openings, anchoring details, sub-sill drainage, and finish codes confirmed in writing.
05
Production Slot Scheduling
Securing prime raw material billets and hardware allocations within our automated CNC manufacturing matrix upon formal deposit confirmation.
06
Verification of Rough Openings
Virtual laser verification or partner field coordination confirms site masonry dimensions before final profile extrusion cutting.
07
360° QC & Export Crating
Every sash undergoes pneumatic squareness inspection, cycling verification, and is packed in custom fumigated plywood crates with moisture barriers.
08
Logistics & Installation Guidance
Full ocean freight dispatch to destination ports, complete with 3D installation manuals, instructional videos, and on-site supervisor dispatch.
Procurement Knowledge Base
Frequently Asked Questions by Global Sourcing Professionals
Clear, unhedged answers to the technical, legal, and operational questions asked most by general contractors, architects, and fenestration importers.
What distinguishes authentic security net doors from regular fly screen doors? +
Authentic security net doors are engineered as life-safety and physical forced-entry barriers. They utilize heavy-wall architectural aluminum extrusions (minimum 1.6mm - 2.0mm wall thickness) and woven high-tensile 304 or 316 marine-grade stainless steel wire (0.80mm - 1.0mm thickness) anchored into the frame via mechanical wedge-clamp or patented screw-retention systems. In contrast, standard insect screen doors use thin roll-formed aluminum (0.6mm - 0.8mm) and fiberglass/nylon insect nets held simply by rubber splines, which can be effortlessly pushed out or slashed with a utility knife.
Can DERCHI manufacture aluminum net doors to custom imperial dimensions? +
Yes. 100% of DERCHI's export production is customized to project-specific rough openings in either imperial (inches/feet) or metric measurements. Our engineering department verifies rough opening tolerances, floor finishes, sub-frame sill tracks, and perimeter flashing details directly from your architectural elevation schedules prior to cutting any aluminum profiles.
How do you resolve galvanic corrosion between the aluminum frame and stainless steel mesh? +
Galvanic corrosion occurs when two electrochemically dissimilar metals make physical contact in the presence of an electrolyte (moisture or salt spray). DERCHI prevents this by utilizing co-extruded EPDM isolation barriers and Santoprene perimeter sleeves that completely isolate the 304/316 stainless steel mesh edge from the aluminum chassis. Additionally, all components receive high-grade electrophoretic or architectural powder coatings tested to 3,000+ hours of continuous salt spray exposure.
Do your fenestration products meet U.S. and Canadian building code approvals? +
Yes. Our product lines hold verified certifications including NFRC (National Fenestration Rating Council) thermal ratings, Canadian CSA standards, ENERGY STAR® compliance, Florida Building Code Product Approvals, and Miami-Dade Notice of Acceptance (NOA) for hurricane impact resistance. Always indicate the specific jurisdiction of your project so our technical team can align the exact tested frame and glass package.
What is the standard lead time for B2B container orders from your Foshan factory? +
Standard production lead time for custom engineered commercial orders is 25 to 35 business days following formal shop drawing sign-off and deposit receipt. For complex projects requiring custom architectural extrusion dies or specialized PVDF fluorocarbon color matching, lead times range from 35 to 45 business days. Transit time varies by global destination port (e.g., 18-25 days to U.S./Canadian West Coast ports; 28-35 days to East Coast ports and European hubs).
How does DERCHI ensure containerized cargo arrives undamaged across ocean voyages? +
All doors and window units are wrapped in 0.2mm protective electrostatic film, cushioned with high-density EPE corner protectors, and sealed into solid, fully enclosed fumigated plywood crates reinforced with internal steel strapping. Dessicant bags are enclosed inside each moisture barrier to prevent humidity condensation across changing maritime climate zones.
Can you support multi-family commercial developers with unified door packages? +
Absolutely. DERCHI specializes in whole-envelope fenestration packages. In addition to exterior aluminum net and barrier doors, we manufacture thermally broken casement windows, monumental sliding patio systems, architectural pivot entry doors, sunrooms, and interior moisture-resistant bathroom swing doors. This allows developers to maintain uniform profile aesthetics, consistent finish color-matching, and a single accountable warranty provider.
Ready to Engineer Your Project's Fenestration Solution?
Connect directly with DERCHI's senior technical fenestration engineers. Send us your architectural schedules, CAD elevations, or custom opening requirements for an exact, code-compliant commercial quotation.