High-Performance Architectural Fenestration Systems
Manufactured to ASTM, AAMA, AS2047, and EN 14351-1 benchmarks. Designed for seamless OEM/ODM integration with custom thermal-break profiles, insulated glass units (IGU), and multipoint locking hardware.
Thermodynamic & Structural Mechanics of OEM/ODM Fenestration
In high-density commercial developments and precision residential envelopes, standard fenestration configurations fail to meet contemporary low-energy operational targets. Specifying bespoke OEM/ODM aluminium assemblies requires a comprehensive understanding of thermal conduction, acoustic dampening, and profile metallurgy.
Alloy Metallurgy: 6063-T5 vs. 6063-T6
DERCHI extrudes exclusively from virgin A00 aluminium ingots, eliminating structural micro-porosities found in scrap remelts. Our structural mullions and transoms utilize 6063-T6 architectural alloy, delivering a tensile strength of ≥241 MPa and yield strength of ≥214 MPa. This provides the structural moment of inertia ($I_x$) required to resist negative wind loads up to ±5500 Pa in coastal supertall developments without frame deflection exceeding $L/175$.
Polyamide Thermal Barriers: PA66-GF25
Thermal bridge interruption is achieved using 24mm to 39mm multi-cavity Technoform PA66-GF25 (polyamide reinforced with 25% transverse glass fiber). Its coefficient of thermal expansion ($2.4 \times 10^{-5}/\text{K}$) mirrors that of extruded aluminium, preventing delamination and gas leakage under rapid cyclic temperature transitions from -35°C to +80°C. Isobaric decompression chambers ensure water tightness across severe monsoon squalls.
IGU Hermetic Matrix & Gas Dynamics
Our Insulated Glass Units incorporate automated secondary dual-seal barriers: polyisobutylene (PIB) primary vapor seal with zero moisture vapor transmission (MVTR) and structural silicone or polysulfide secondary seals. Cavities are filled with ≥90% Argon gas concentration via online automated evacuation, coupled with composite warm-edge stainless steel/polypropylene spacer bars to mitigate edge-seal condensation and perimeter linear thermal bridging ($\Psi$).
| Performance Vector | North America (NFRC/ASTM) | Australasia (AS2047 / AS1288) | European Union (EN 14351-1) | DERCHI Factory Baseline (OEM/ODM) |
|---|---|---|---|---|
| Overall U-Factor ($U_w$) | ≤ 0.28 Btu/h·ft²·°F | ≤ 1.8 W/m²·K | ≤ 1.2 W/m²·K | 0.92 – 1.35 W/m²·K (Passive House Grade) |
| Air Infiltration Rating | ≤ 0.30 cfm/ft² (ASTM E283) | ≤ 1.0 L/s·m² @ 75 Pa | Class 4 (≤ 3 m³/h·m² @ 600 Pa) | Class 4 / ≤ 0.08 cfm/ft² Exceeded |
| Water Penetration Resistance | ≥ 720 Pa (15.0 PSF, ASTM E331) | ≥ 450 Pa (High Exposure) | Class 9A / E1200 (≥ 1200 Pa) | ≥ 1050 – 1500 Pa (Sub-sill drainage) |
| Acoustic Attenuation (STC / $R_w$) | STC 32 – 38 dB | $R_w + C_{tr} \ge 32\text{ dB}$ | $R_w \ge 35\text{ dB}$ | STC 42 – 48 dB (Asymmetric Laminate) |
| Cyclic Wind Structural Load | DP 50 to DP 90+ (TAS 201/202) | Serviceability & Ultimate ≥ 4500 Pa | Class C5 (≤ 1/300 deflection) | ± 5500 Pa Hurricane Impact |
Global Sourcing Trends & Next-Gen Fenestration Architectures
Procurement directors and master developers are moving away from regional off-the-shelf distributors toward direct factory ODM/OEM partnerships. The convergence of strict building carbon taxes, rapid climate fluctuations, and industrialized modular construction is reshaping global supply chain requirements.
1. Low Embodied Carbon Aluminium
With Scope 3 emissions audits becoming mandatory across North America and the EU (via CBAM), Tier-1 developers demand aluminium extrusions smelted using renewable hydroelectric energy. DERCHI provides verified Environmental Product Declarations (EPDs), offering alloy matrices with >40% certified post-consumer scrap without compromising tensile integrity or anodizing homogeneity.
2. Ultra-Slim Sightline Engineering
Architectural demand has shifted decisively toward unobstructed glazing ratios with vertical interlock stiles narrowing to under 25mm. To offset reduced aluminum mass, DERCHI utilizes continuous carbon-fiber reinforcement sleeves and structural structural corner cleats, maintaining rigorous inertia ratings ($I_x$) while expanding daylight harvesting parameters.
3. Building Envelope Mechatronics
Commercial facades now mandate smart-building connectivity. Our ODM assembly lines embed brushless 24V linear micro-actuators within the thermal-break frame profile, providing silent automated sash ventilation tied directly to internal HVAC air quality sensors and centralized BMS (Building Management Systems) via BACnet or Modbus protocols.
4. BIM-to-Fabrication Digital Twins
Procurement errors are prevented by replacing flat 2D shop drawings with parametric BIM Revit families. DERCHI imports developer architectural models directly into our 5-axis CNC Elumatec machining centers, eliminating field-dimension discrepancies and ensuring exact mill-cut accuracy across thousands of customized fenestration units.
Guangdong Dejiyoupin Doors & Windows Co., Ltd. (DERCHI)
Headquartered in Nanhai District, Foshan—the epicenter of global architectural aluminum extrusion—DERCHI represents over 25 years of engineering mastery. Our 180,000 m² state-of-the-art facility integrates automated billet extrusion, anodizing, electrostatic PVDF powder coating, precision thermal break crimping, and automated IGU assembly under a unified ISO 9001 quality framework.
With an annual output surpassing 1,000,000 m² and a team of 30+ dedicated structural facade engineers, we partner with real estate developers, EPC contractors, and system distributors across Asia, North America, Australia, and the Middle East to deliver certified fenestration on schedule and within budget.
Exclusive Patented 4-Side 6-Point Lock
Our proprietary locking mechanism engages stainless steel mushroom head cams across all four perimeter sash channels simultaneously. This provides unmatched forced-entry resistance (PAS 24 / RC3 compliant) while exerting uniform compression against heavy EPDM dual-weather gaskets to eradicate draft leakage.
360-Degree Factory Metrology & Quality Check
From spectral alloy composition testing on raw ingots to helium leak detection in double-glazed IGU cavities, every unit carries a digital factory traceability barcode before crating in steel-reinforced, moisture-barrier timber enclosures.
The 8-Step OEM/ODM Turnkey Delivery Framework
A rigorous, accountable engineering pipeline built to de-risk overseas procurement for commercial contractors and project owners.
Drawing Audit
Façade engineers evaluate architectural CAD/BIM models, structural wind load targets, and thermal boundary lines.
Thermal R&D
Custom profile dies and thermal break cavities are calculated using finite element thermal simulation software.
Engineering Proposal
Detailed technical submittal packages including glass solar-optical metrics, hardware specs, and commercial schedules.
Shop Detail Sign-off
Full-scale 1:1 cross-section CAD drawings, frame jointing details, and perimeter flashing interfaces are locked in.
Deposit & Tooling
Raw materials, extrusions, and certified hardware batches are assigned to intelligent CNC production queues.
Dimensional Check
Critical opening dimensions are verified against building structural tolerances to prevent on-site fitting anomalies.
Precision Assembly
Automated corner crimping with two-part epoxy injection, automated IGU sealing, and comprehensive air/water mock-up testing.
Job-Site Guidance
Steel-pallet sea container packing with labeled sub-assemblies, accompanied by on-site technical installation guidance.
Engineered Facade Strategies by Climate Classification
A single fenestration specification cannot address the opposing thermal and physical forces across global microclimates. DERCHI tailors glass coatings, alloy wall thicknesses, and gasket geometry to regional environmental stressors.
Typhoon & Severe Wind Belts
Target Markets: Philippines, Japan, Caribbean, Florida Coastline
- Heavy-duty 2.5mm to 3.0mm structural outer wall extrusion thickness.
- SentryGlas (SGP) laminated safety glass resisting Large Missile Impact (ASTM E1996).
- Multi-point compression sash latches resisting dynamic cyclic pressure spikes.
Tropical Monsoonal & Humid
Target Markets: Singapore, Malaysia, Indonesia, Thailand, Vietnam
- High-drainage stepped sill chambers preventing water overflow during 150mm/hr squalls.
- Double Low-E soft coatings optimized for Solar Heat Gain Coefficient (SHGC ≤ 0.23).
- Anti-condensation thermal breaks preventing interior mold spores on aluminum frames.
Arid Desert & High Solar Load
Target Markets: Saudi Arabia, UAE, Kuwait, Israel, Arizona
- Triple-silver magnetron sputtered Low-E glass reflecting >95% of near-infrared radiation.
- Dust-impervious continuous Santoprene TPV perimeter seals preventing particulate ingress.
- Class AAMA 2605 fluoropolymer PVDF surface finishes resistant to intense UV sand-scour.
Sub-Zero & Continental Cold
Target Markets: Northern USA, Canada, South Korea, Scandinavia
- Triple glazed, dual argon-filled IGU architectures reaching $U_w \le 0.8\text{ W/m²·K}$.
- Polyurethane aerogel frame insulation inserts within internal extrusion chambers.
- Insulated sub-sill thermal isolators to completely stop perimeter freeze-thaw bridging.
Frequently Asked Questions for Project Procurement
Direct technical responses addressing common engineering considerations raised by foreign procurement consultants, general contractors, and structural engineers.
What is the typical tooling lead-time for custom OEM architectural profile extrusions?
For custom profile cross-sections requiring proprietary extrusion dies, our in-house tooling division delivers functional steel dies and first-article extrusion samples within 14 to 18 calendar days. Following formal client sign-off on CMM dimensional metrology reports, full automated production of structural lots commences within 10 days.
How does DERCHI prevent glass deflection and seal failure on oversized sliding panels?
For sliding panels exceeding 3.2 meters in height, we utilize finite-element glass stress modeling to specify toughened laminate configurations (e.g., 6mm Low-E + 16Ar + 6mm + 1.52PVB + 6mm). We combine this with continuous structural silicone wet-glazing directly bonded to the internal profile rebate, preventing panel sagging and ensuring seal integrity over decades.
Can you provide independent third-party acoustic laboratory test certificates?
Yes. DERCHI fenestration systems are tested in accredited laboratories in accordance with ASTM E90, ASTM E413, and ISO 10140-2. We provide verifiable test reports verifying Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC) metrics, achieving up to STC 48 dB for hospitality projects situated along high-traffic transit corridors.
What surface coating treatments are used for coastal, high-salinity exposures?
For installations situated within 500 meters of the coastline, we specify Class 1 Anodizing (≥25 microns conforming to AAMA 611) or 3-coat fluoropolymer PVDF liquid coating (≥70% Kynar 500 resin base complying with AAMA 2605). These coatings resist over 4,000 hours of continuous salt spray testing (ASTM B117) without micro-blistering, chalking, or color fading.
How are units packaged to guarantee zero transit damage during ocean freight?
All fenestration assemblies undergo multi-layer protection: peelable protective PE film on aluminum extrusions, corner shock-absorbers, closed-cell foam interleaving, and vacuum-sealed plastic shrink wrap. Units are secured inside fumigated, heavy-duty timber crates reinforced with internal steel bracing and desiccant packs to prevent condensation hazing inside marine containers.
What is your Minimum Order Quantity (MOQ) and production capacity for phased high-rise towers?
Our standard production baseline accommodates phased project rollouts with an MOQ as low as 100 m² for custom configurations, while our 1,000,000 m² annual facility capacity comfortably handles high-volume orders exceeding 30,000 m² per single delivery cycle. We routinely execute batch shipments synchronized with the structural floor-by-floor schedule of high-rise construction.
Life-Cycle Cost (LCC) & Total Cost of Ownership Optimization
Selecting lower-tier uncertified windows creates hidden long-term liabilities: thermal seal failure, hardware binding, water damage, and severe HVAC chiller inefficiency. High-performance OEM/ODM fenestration yields positive financial amortization over a 30-year operational lifecycle.
HVAC Capital Expenditure Downsizing
By engineering high-performance thermal break assemblies with whole-window $U_w \le 1.2\text{ W/m²·K}$ and low SHGC values, building cooling loads are reduced by 18% to 26%. This directly decreases the required sizing and capital expenditure for central chillers, cooling towers, and mechanical duct distribution networks on day one.
Zero-Failure Hardware Lifecycle
DERCHI integrates German-engineered and proprietary heavy-duty 304/316 stainless steel bogie rollers and transmission gears tested to ≥50,000 continuous opening and closing cycles without mechanical degradation. This eliminates common, costly tenant disruption and recurring post-occupancy service calls.
Building Asset Valuation & Certification
Precision-engineered double-glazed facade envelopes contribute significantly toward achieving LEED Gold/Platinum, BREEAM Outstanding, and Australian Green Star environmental certifications. Certified green assets enjoy higher rental yields, lower vacancy rates, and reduced long-term portfolio depreciation.
Initiate Your Engineering Consultation & Custom Sourcing
Partner directly with Foshan's premier architectural fenestration manufacturer. Submit your structural drawings, performance schedules, or custom profile design requirements to our engineering team for an in-depth technical analysis and commercial proposal.