Heritage Series
Engineered Fenestration Portfolio
Commercial & Luxury Architectural Door and Window Systems
Manufactured using primary 6063-T5/T6 structural aluminium extrusions with continuous polyamide PA66 thermal barriers, German-certified multi-point security hardware, and precision Low-E multi-pane acoustic glazing.
High-Span Patio
Acoustic Series
Security Rated
Hospitality
Flex Space
Storefront Spec
Space-Saving
Enterprise Metallurgy & Capacity
Global OEM/ODM Fenestration Manufacturing Infrastructure
Operating as a Top-10 brand in China with over 25 years of specialized door and window engineering, DERCHI integrates smart extrusion fabrication, precision corner crimping, and automated electrostatic powder coating.
180,000㎡
Foshan Smart Production Base
600+
Skilled Craftsmen & Engineers
100+
Patents & Global Certifications
25+
Years Industrial OEM Experience
AS2047 N6 & CE Testing
Our structural fenestration systems undergo rigorous cyclical pressure testing up to 4500 Pa, achieving Australia AS2047 N6 cyclonic compliance, European CE EN14351-1, and UL10C fire ratings.
Comprehensive OEM/ODM
Full CAD/BIM architectural shop drawing modeling within 24 hours. Custom extrusion die fabrication, tailored sill weep slots, concealed hinges, and customized structural mullion reinforcement.
Automated Precision CNC
Equipped with high-precision double-mitre saws, 4-axis CNC milling centers, and automatic liquid injection glue sealing that guarantee air tightness under ASTM E283 criteria.
Export-Crated Logistics
Turnkey ocean consolidation for international ports (Lagos, Durban, Mombasa, Long Beach, Sydney). Timber-free fumigated plywood crates, protective peelable film, and corner shock absorption.
Automated Surface Finishing & Metallurgical Integrity
At DERCHI, we exclusively utilize 100% primary aluminium billet extrusions of 6063-T5 and 6063-T6 alloy grades, strictly eliminating recycled scrap contamination to ensure tensile strength exceeding 160 MPa. Our automated coating lines deploy world-class AkzoNobel and PPG fluorocarbon (PVDF) resins and Tiger Drylac powder coatings.
- Qualicoat Class 2 Standard: Minimum 60-80μm powder thickness resisting 5,000+ hours acetic salt spray testing for harsh maritime installations.
- Continuous Polyamide PA66 GF25: 25% glass fiber reinforced thermal break struts guaranteeing shear strength above 80 N/mm.
- Precision Multi-Seal EPDM: Cellular micro-porous vulcanized rubber gaskets delivering 35-year elasticity without cracking under intense ultraviolet exposure.
Strategic Procurement Analysis
Future Architectural Trends in Aluminium Doors & Windows Procurement
In-depth industry analysis evaluating decarbonization standards, envelope energy codes, thermal transmission criteria, and supply chain rationalization for international developers and MEP contractors.
1. Ultra-Low U-Value Mandates & Passive Envelopes
Global regulatory bodies (Title 24 California, UK Building Regs Part L, and Australian NCC 2022) have tightened maximum overall window heat transfer coefficients (U-factors). Modern institutional developers are specifying holistic window-wall assemblies achieving Uw ≤ 0.8 to 1.2 W/m²·K. This necessitates multi-chambered polyamide thermal isolators up to 34mm wide, warm-edge silicone structural spacers, and inert argon-gas filled insulated glass units (IGU) featuring triple-silver soft-coat Low-E layers that reflect infrared radiation while maximizing visible light transmission (VLT ≥ 68%).
2. Mechatronic Smart Hardware & Concealed Automation
Architectural fenestration is transitioning rapidly from passive mechanical fixtures into integrated smart building envelopes. Forward-thinking general contractors demand OEM systems pre-machined for concealed electro-mechanical motorized chain actuators, automated multipoint locking rods, biometric fingerprint readers, and dry-contact sensors compatible with KNX, BACnet, and Zigbee Home Automation systems. Flush floor threshold drainage designs that completely eliminate water penetration under 600 Pa while providing seamless barrier-free ADA accessibility are now mandatory for luxury hospitality and premier multi-family projects.
3. Circular Aluminium & Low Embodied Carbon (EPD)
With LEED v4.1, BREEAM, and Green Star accreditation driving commercial tenders, structural door and window suppliers must furnish verified Environmental Product Declarations (EPD). Hydro-powered certified low-carbon aluminium billets (with carbon footprints under 4.0 kg CO₂e per kg Al, compared to the global coal-fired average of 16.5 kg CO₂e) represent the premier procurement frontier. DERCHI provides comprehensive material traceability, metallurgical chemical assay certificates, and ISO 14001 compliant lifecycle documentation.
Structural Alloy Metallurgy: 6063-T5 vs. 6063-T6 Engineering Criteria
Choosing the correct architectural extrusion temper is decisive for deflection resistance under sustained wind loads. While 6063-T5 alloy (aged artificially at lower temperatures) satisfies standard interior sliding systems with a Webster hardness of ≥8-10 HW, heavy-duty commercial storefronts, hurricane-rated casements, and oversized pivot doors mandate 6063-T6 temper achieving Webster hardness ≥12 HW and yield strength exceeding 170 MPa.
Our engineering team utilizes specialized dual-injection 3-axis corner crimping machines coupled with stainless steel corner braces (shear keys) and Henkel two-component structural bonding adhesive, preventing corner misalignment and guaranteeing that joints remain watertight under severe tropical cyclone conditions.
Contact Us| Performance Indicator | Commercial Grade Specification | DERCHI Laboratory Test Standard | Compliance Accreditation |
|---|---|---|---|
| Thermal Transmittance (U-Value) | 0.80 – 1.40 W/m²·K (Passive Standard) | Guarded Hot Box Method (ISO 12567-1 / ASTM C1363) | CE / NFRC |
| Wind Pressure Resistance | Serviceability: 3000 Pa | Ultimate: 4500 Pa (N6) | Cyclic Static Pressure (AS2047 / ASTM E330) | AS2047 N6 |
| Water Penetration Resistance | Static: 700 Pa (No Leakage) | Dynamic: 1500 Pa | Water Spray Rack under Differential Pressure (EN 12208) | AAMA 501.1 |
| Acoustic Attenuation (STC / Rw) | Rw = 38 dB to 44 dB (Triple Laminated IGU) | Laboratory Sound Insulation Test (ISO 10140 / ASTM E90) | ISO 9001 |
| Forced Entry Security Resistance | Multi-Point Locking, Anti-Drill, Anti-Bumping Cylinder | Burglary Resistance Class RC2 / RC3 (EN 1627 / PAS 24) | CE Security |
| Surface Coating Durability | AAMA 2605 3-Coat PVDF / Qualicoat Class 2 Powder | 5,000 Hours Neutral / Acetic Acid Salt Spray (ASTM B117) | AAMA / Qualicoat |
Procurement Due Diligence
Frequently Asked Questions for General Contractors & Specifiers
Direct technical answers addressing OEM customization parameters, port delivery agreements, container load optimization, and structural fenestration testing.
What is the standard OEM lead time from approved CAD shop drawings to container dispatch?
For standard architectural profiles and catalog finishes, our production turnaround is typically 25 to 30 calendar days upon final sign-off of shop drawings. Bespoke extrusions requiring custom CNC die tooling add 10 to 12 days for die extrusion fabrication and cross-sectional sample metallurgical validation. Project-specific container sequencing is coordinated directly with the client's site logistics schedule.
How do you guarantee weather sealing and corrosion resistance in marine/coastal environments?
For coastal installations located within 1.5 km of the ocean (such as Miami, Lagos, Durban, or Sydney), we mandate AAMA 2605 compliant PVDF fluorocarbon coatings (min 70% Kynar 500 resin) or high-micron architectural anodizing (min 25μm Class I). All exposed fasteners, hinges, rollers, and pivot shafts are upgraded to marine-grade AISI 316 stainless steel, backed by EPDM dual-vulcanized silicone gaskets.
Can you manufacture large oversized architectural pivot and lift-slide systems?
Yes. Our heavy-duty pivot door line supports leaf heights up to 4500mm (14.7 ft) and widths up to 2200mm (7.2 ft) with weights exceeding 450 kg (990 lbs), anchored by German Dorma or FritsJurgens concealed hydraulic floor springs. Lift-and-slide doors utilize specialized German Siegenia/Hautau stainless carriage gear sets accommodating 400 kg sash loads with effortless fingertip operation.
What documentation and test certificates do you provide for customs and building inspections?
Every commercial shipment includes certified Factory Production Control (FPC) test reports, CE Declarations of Performance (DoP), ISO 9001 quality certificates, AS2047 wind and water laboratory test certificates, and Glass Tempering impact reports under ANSI Z97.1 / EN 12150. For West African destinations, we assist directly with SONCAP (Nigeria) and KEBS PVoC (Kenya) verification documentation.
How are glass units engineered to balance solar heat gain coefficient (SHGC) and U-factor?
We configure glass build-ups using internationally accredited Saint-Gobain, CSG, or Xinyi glass substrates. For tropical and arid zones with high solar irradiance, we recommend double-silver Low-E coated units providing an SHGC between 0.22 and 0.28 to significantly decrease HVAC chiller operational loads, while maintaining daylight transmittance exceeding 60%.
What export packaging protocols are implemented to prevent transit deflection and scratching?
Every window and door sash is wrapped in 0.08mm electrostatic PE protective film, reinforced with high-density EVA foam corner buffers, enveloped in heavy-gauge corrugated board, and enclosed in heat-treated fumigation-free solid plywood export crates. Crates feature integrated bottom forklift skids and moisture-desiccant packs to prevent condensation bloom during long ocean transits.
