Precision-Engineered Aluminium Door & Window Systems
Explore our export-certified architectural systems designed to withstand extreme wind load, tropical humidity, and intrusion threats with full EN and hurricane-resistance compliance.
- Mesh Spec: 304 Stainless Steel
- Profile: 6063-T6 Thermal Break
- Standard: CE EN 14351-1
- Glass Spec: Smart Switchable / Laminated
- Wind Load: Class C5 / Large Missile
- Application: High-Traffic Storefront
- Hardware: Heavy-Duty Stainless Rollers
- Threshold: Weather-Sealed Low Track
- Opening: Up to 90% Clear Span
- Glazing: SentryGlas® Laminated
- Impact: TAS 201/202/203 Tested
- Multi-Lock: Six-Point Anti-Jemmy
- Pivot Life: 500,000+ Cycles
- Extrusion: 3.0mm Structural Wall
- Operation: Dual-Action 90° Hold-Open
- Insulation: Polyamide PA66 Strips
- U-Value: Down to 1.4 W/m²K
- Finish: Qualicoat Class 2 Powder
- Corrosion: Anodized 25-Micron
- Gasket: Magnetic Micro-Sealing
- Aesthetic: Ultra-Slim Minimalist
- Weathering: Triple EPDM Fin Seals
- Drainage: Cascaded High-Water Track
- Compliance: NFRC / CE Tested
Guangdong Dejiyoupin Doors & Windows Co., Ltd. (DERCHI)
Headquartered in Nanhai District, Foshan—the epicenter of China's premium architectural aluminum supply chain—we operate a zero-tolerance engineering framework delivering audited reliability for high-volume international developments.
Patented 6-Point Locking
Equipped with our patented Four-Side Six-Point interlocking system, transforming screen doors into impenetrable anti-burglary barriers that withstand severe crowbar jemmy attacks.
Invention Patent Tested360° Zero-Defect QC
Every sash and door panel undergoes multi-axis CNC milling, acoustic seal alignment, and computerized angle-joint crimping to match millimetric BIM shop-drawing parameters floor-by-floor.
Automated CNC ProcessingGlobal Certification Suite
Our products possess full compliance documentation including CE (EN 14351-1), NFRC thermal metrics, Australian AS2047, Canadian CSA, Energy Star, and ASTM hurricane impact certifications.
CE / AS2047 / NFRC Certified30+ Specialist R&D Engineers
Dedicated façades and fenestration engineers customize profiles, thermal breaks, mesh wire gauges, and drainage dynamics based on structural wind loads and localized regional codes.
Bespoke Shop DrawingsStructural Anatomy & Material Science of High-Security Aluminium Net Doors
A comprehensive examination of alloy composition, structural extrusion wall profiles, wire mesh metallurgy, and mechanical sealing mechanisms for specification authorities.
1. Extruded Aluminium Substrates & Temper Matrix
Commercial-grade net doors rely on precision-engineered 6063-T6 or 6061-T6 architectural aluminium alloys. In contrast to generic consumer screens that use ultra-thin 0.8mm-1.0mm residential trims, certified security net door systems demand an extrusion wall thickness spanning 2.0mm to 3.0mm at primary stress vectors.
The artificial precipitation heat treatment (T6 temper) delivers a yield strength exceeding 210 MPa and an ultimate tensile strength over 240 MPa. This rigid structural frame prevents diagonal sagging and frame twisting when subjected to intense wind pressure (EN 12210 Class C5) or forced mechanical prying.
2. High-Tensile Marine Mesh: 304 vs. 316 King Kong Netting
The protective barrier consists of heavy-gauge stainless steel wire cloth woven with absolute aperture consistency. Wires are cold-drawn to a precise diameter (0.80mm to 1.0mm) with tensile strengths rating over 900 N/mm²:
- AISI 304 High-Tensile Mesh: Ideal for non-saline inland and urban applications, offering exceptional shear resistance against utility blades and heavy blunt-force impact.
- AISI 316 Marine-Grade Mesh: Infused with 2.0%-3.0% Molybdenum, providing decisive defense against chloride pitting and crevice corrosion in coastal environments. Our mesh survives 1,200+ hours in ASTM B117 salt spray testing without oxidation.
3. Patented Tension Clamping & Wedge-Lock Technology
A frequent failure point in substandard insect screens is mesh pull-out under impact. CE-compliant net doors discard adhesive bonding or friction beading in favor of a mechanical screw-clamped wedge system.
The stainless steel screen perimeter is secured between high-tensile aluminium clamping plates fixed into the hollow frame channel via stainless steel fasteners spaced every 75mm. This distributes localized impact energy across the complete frame perimeter, easily passing Australian AS 5039/5041 knife shear and dynamic impact tests.
4. Multi-Point Jam-Free Espagnolette Locking Mechanism
Security doors feature full-length multi-point linkage locking systems fabricated with corrosion-resistant 304 stainless steel deadbolts and shoot bolts. By locking simultaneously into the top jamb, bottom sill, and multiple lateral strike plates, the door forms a monolithic structural barrier that prevents jemmy prying while ensuring positive acoustic and thermal compression seals.
| Performance Parameter | DERCHI CE Certified Net Door | Standard Commercial Net Door | Residential Fly Screen |
|---|---|---|---|
| Aluminium Alloy & Profile Thickness | ✔ 6063-T6 (2.0mm - 3.0mm Heavy Wall) | 6063-T5 (1.2mm - 1.4mm) | Recycled Alloy (< 1.0mm) |
| Screen Mesh Infill Spec | ✔ 0.8mm-1.0mm AISI 316 Marine Grade | 0.6mm AISI 304 Mesh | Fiberglass / Nylon Mesh |
| Anti-Intrusion Knife Shear Test | ✔ Passed AS 5041 / Level 3 Security | Partial Resistance | Failed (Easily Slashed) |
| Salt Spray Corrosion Resistance | ✔ 1,200+ Hours Neutral Salt Spray (NSS) | 300 - 500 Hours NSS | < 72 Hours (Rapid Rust) |
| Locking System Integration | ✔ Patented 4-Side 6-Point Interlock | Single-Point / Dual Hook Lock | Plastic Latch / Magnetic Catch |
| Wind Pressure Rating | ✔ EN 12210 Class C5 / Hurricane Impact | EN 12210 Class B2 | Non-Rated (Blown Out) |
Future Procurement Trends in the Global Aluminium Net Door Sector (2025–2030)
Macro-level market data and engineering convergence shifting how developers, general contractors, and distributors procure architectural barrier systems.
1. Monolithic 2-in-1 Glazing & Mesh Integration
Procurement teams are shifting away from retrofitted secondary screens. The dominant trend focuses on integrated dual-track or triple-track structural frames that combine double-glazed insulated Low-E glass panels with flush-mounted security screens within a single thermal-break sub-frame, slashing site labor by 40%.
Unified Installation Efficiency2. Zero-Carbon & EPD Traceability Mandates
European and North American sustainability frameworks (such as LEED v4.1 and the EU Carbon Border Adjustment Mechanism) now mandate Environmental Product Declarations (EPDs). Sourcing managers prioritize factories employing low-carbon primary hydro-powered aluminium billets and VOC-free powder coats.
Green Building Standard Ready3. Motorized Automation & IoT Biometrics
Architectural villa and hospitality projects are moving toward motorized net sliding screens integrated with building management systems (BMS). Hidden tubular brushless motors, rain sensors, and smartphone-controlled magnetic contact locks are replacing purely manual sliding handles.
Smart Living IntegrationTechnological Frontiers in Net Door Fabrication & Surface Chemistry
How cutting-edge surface coatings, precision robotics, and thermal-break metallurgy elevate life expectancy and acoustic isolation.
Super-Durable Powder Finishing
Application of Qualicoat Class 2 / AAMA 2604 thermosetting polyester and fluorocarbon (PVDF) electrostatic powders. Formulated to resist extreme solar UV radiation without chalking or gloss retention decay, ensuring 15-25 years of outdoor durability in harsh equatorial sun.
Qualicoat Class 2 StandardMicro-Wire High Transparency Weaving
Breakthroughs in wire drawing allow the production of 0.60mm high-tensile spring-steel wire with a 900+ MPa yield strength. This achieves 75% optical clarity (comparable to invisible insect screen) while preserving complete protection against intrusion and blunt impact.
75% Visual TransparencySub-Millimeter Robotic Crimping
Automated corner assembly uses dual-component polyurethane structural bonding glues injected under hydraulic corner-crimping heads. This eliminates diagonal corner gaping, preventing moisture ingress and ensuring structural squareness across oversized 3000mm panels.
Precision Hydraulic CrimpingFrequently Asked Questions for Sourcing & Specification Engineers
Clear, uncompromised engineering and commercial answers to guide procurement officers, quantity surveyors, and project directors before contract commitment.
Why Tier-1 Contractors and Global Developers Choose DERCHI
From initial shop drawing consultation to international containerized logistics, our end-to-end manufacturing infrastructure eliminates procurement risks.
Rigorous 8-Step Engineering Workflow
Every commercial project follows a strict 8-step quality lifecycle: Architectural Drawing Review, R&D Structural Matching, Cost Engineering, Written Detail Sign-off, Deposit Scheduling, On-Site Precision Dimensioning, Automated CNC Production, and On-Site Installation Guidance.
Foshan Industrial Cluster Proximity
Located in the heart of Guangdong's advanced metal extrusion and architectural hardware cluster, we benefit from immediate raw material access, lowering unit extrusion overheads and providing rapid container transit via Pearl River Delta ports.
300+ Franchisees & 18,000+ Projects
Our products protect prestigious commercial landmarks, residential communities, and luxury hospitality destinations across Singapore, Japan, Korea, Australia, the Middle East, Europe, and the Americas—validated by real project metrics.
Request Technical Specifications & Direct Factory Pricing
Connect directly with our engineering estimation department. Upload your architectural drawings, tender schedules, or custom dimension lists for an audited technical proposal and wholesale quotation within 24 hours.