Folding & Casement
Featured Aluminium Casement & Architectural Fenestration Systems
Engineered for high-wind resistance, supreme water tightness, and continuous thermal comfort across Oceania, North America, and European building envelope standards.
Crittall Style
Casement Window
Fire-Rated System
Patio Swing
Security Casement
Hybrid PT/PD
Hurricane Rated
180,000m²
Smart Manufacturing Base
25+ Yrs
OEM/ODM Engineering Lineage
N6Rating
AS 2047 Extreme Wind Load
100+
Global Patents & Certs
Industry Whitepaper Analysis
The Mechanics of Precision OEM/ODM Aluminium Casement Windows
In contemporary commercial facade design and high-end residential master developments, the aluminium casement window stands out as the ultimate fenestration baseline for acoustic decoupling, negative wind load endurance, and airtight envelope integrity. Unlike lateral sliding systems that depend on variable-friction brush seals, an outward or inward swing casement operates on a compression-gasket mechanism. When engaged by multi-point peripheral gear locks, the casement sash pulls flush against the outer perimeter extrusion frame with uniform force, compressing triple-fin co-extruded EPDM (Ethylene Propylene Diene Monomer) weatherstrips down to exact tolerances.
As a global OEM/ODM aluminium casement windows exporter, our engineering framework begins at the metallurgical molecular level. We utilize high-purity virgin primary aluminium billet alloys—specifically 6063-T5 and structural 6060-T6. These architectural profiles deliver an ultimate tensile strength exceeding 205 MPa and yield strength beyond 170 MPa. By strictly controlling the magnesium-silicon stoichiometric ratios, our profiles resist stress corrosion cracking, withstand continuous inter-story structural deflection, and accept precision CNC multi-axis milling without micro-fracturing along the glazing rebates.
Acoustic & Thermal Synergy: Incorporating glass configurations up to 42mm triple-glazed IGUs with asymmetric laminated panes (e.g., 6mm Low-E + 16Ar + 4mm + 12Ar + 33.2 Acoustic PVB) achieves Sound Transmission Class (STC) ratings above 42 dB and overall U-values beneath 1.1 W/(m²·K).
ODM customization empowers structural architects, commercial developers, and regional distributors to adapt frame extrusion depths (ranging from slimline 50mm up to heavy-duty 120mm architectural curtain-wall adaptors) to project-specific wind pressures. Whether confronting coastal cyclonic conditions in Northern Australia requiring an AS 2047 N6 rating (wind pressure resistance exceeding 4400 Pa) or hurricane zones in the Caribbean and Florida panhandle, every casement extrusion die is custom-modeled in finite element analysis (FEA) software before physical extrusion tooling begins.
Core Engineering Specifications
Standard architectural parameters deployed across our OEM/ODM casement window manufacturing lines:
- Extrusion Wall Thickness: 1.4mm to 2.2mm structural grade
- Polyamide Thermal Break: PA66 GF25 (25% glass fiber reinforced)
- Hardware Ingress: Multi-point mushroom cam gear locks
- Surface Treatment: Qualicoat Class 2 / PVDF 3-Coat 35μm+
- Corner Jointing: Cast aluminium crimped blocks + epoxy injection
- Standard Water Penetration Resistance: 450 Pa to 700 Pa (Static)
Fenestration Evolution: Product Development & Engineering Trends
The global window market has transitioned from basic utilitarian envelope closures to hyper-engineered, multi-functional energy conservation systems. Discover the technical developments dominating modern project specifications.
Ultra-Narrow Bevel Sightlines & Concealed Sashes
Architectural demand has shifted decisively toward minimalist industrial aesthetics. Traditional casement frames with bulky 80mm-to-100mm face profiles are being supplanted by ultra-narrow visible sightlines (as slim as 38mm to 48mm). By recessing the operable sash entirely within the outer sub-frame extrusion, our concealed-sash ODM configurations produce a clean, uniform exterior appearance where fixed picture windows and operable casements are indistinguishable from outside elevations.
- Maximizes daylight opening (VLT) by up to 18%
- Concealed four-bar friction stays rated for 130kg sashes
- Integrated micro-drainage channels preventing facade run-off
Multi-Chambered PA66 GF25 Iso-Struts
Net-zero building mandates and updated energy conservation frameworks (such as Australia's NCC 2022 7-star NatHERS, California Title 24, and Europe’s EPBD) necessitate continuous thermal insulation barriers. Modern ODM casement window profiles incorporate multi-chambered Polyamide 6.6 insulating struts reinforced with 25% cross-strand glass fiber. These composite bridges decouple the exterior and interior aluminium profile sections, mitigating condensation formation while delivering superior structural shear resistance.
- Thermal conduction bridge depth: 24mm to 39mm
- Polyolefin foam insulative inserts within chambers
- Overall Frame U-value down to Uf = 1.3 W/(m²·K)
Motorized Mechatronic & Smart Building Integration
Modern commercial office blocks, luxury residences, and institutional developments increasingly mandate automated natural ventilation routines synced with building management systems (BMS). Our OEM manufacturing lines integrate concealed 24V DC chain-drive actuators directly into the casement profile rebate. Operating in silent synchronicity, these mechatronic window drives respond dynamically to indoor carbon dioxide thresholds, interior ambient temperature spikes, and external rain or wind velocity sensors.
- Concealed wiring chases pre-machined on multi-axis CNCs
- KNX, BACnet, and Modbus protocol direct compatibility
- Pinch-protection safety sensors compliant with EN 16005
Procurement Strategic Insight: Sourcing direct from tier-one integrated extrusion fabricators reduces landed cost variations by 22% while providing cradle-to-gate Environmental Product Declarations (EPDs) required for LEED v4.1 and Green Star ratings.
Strategic B2B Supply Chain Priorities
- Low-Carbon Aluminium Billets: Hydro-smelted circular alloys with <4.0 kg CO2/kg output
- BIM Level 3 Object Libraries: Parametric Revit families with thermal boundaries
- Prefabricated Glazing Envelopes: Factory-glazed units eliminating onsite installation delays
- Fumigated Custom Steel Stillages: Reduced unpack times & zero shipping scuffing
Strategic Sourcing Analysis
Global Procurement Trends Shaping Fenestration Importers & Contractors
Between 2025 and 2030, procurement directors, commercial facade consultants, and master developers face unprecedented supply chain transformation. The traditional procurement methodology—relying exclusively on localized fabricators who assemble imported extrusions with heavy domestic markups—is being outcompeted by direct-to-source OEM/ODM factory alliances. Leading global contractors are actively disintermediating middle-tier supply chains to gain full transparency over raw ingot pricing, extrusion dies ownership, and factory-certified quality controls.
A primary driver is the institutional mandate for decarbonized construction products. Major real estate investment trusts (REITs) and institutional developers across the EU, the United States, and Australia are requiring third-party verified Type III Environmental Product Declarations (EPDs). OEM exporters must trace the carbon footprint of every extruded kilogram back to the smelting source. By partnering with DERCHI, overseas importers access verifiable low-carbon 6063 alloys processed utilizing clean solar and hydroelectric energy, directly addressing Scope 3 embodied carbon targets.
Simultaneously, modular construction and off-site prefabrication require windows to arrive on project sites fully assembled, dry-glazed, pre-fitted with perimeter fixing brackets, and structurally bonded with structural silicones (two-part silicone structural glazing, SSG). By transitioning assembly and pressure chamber testing into our precision Foshan industrial park, construction teams trim on-site labor overheads by up to 65%, completely eliminating weather-induced assembly defects.
Engineering Validation: Performance Testing Benchmarks
Every OEM/ODM aluminium casement window assembly is subject to rigorous physical testing in certified wind tunnel and pressure chamber facilities to ensure compliance with global structural building codes.
| Performance Criterion | Australian Standards (AS 2047) | American Standards (AAMA / WDMA / CSA) | European Standards (EN 14351-1) |
|---|---|---|---|
| Structural Wind Load (Deflection) | Serviceability: 1500 Pa to 3000 Pa Rating: N4 to N6 Achieved |
Design Pressure (DP): Class CW-PG50 to AW-PG80 | Class 4 to Class 5 (>2000 Pa) EN 12210 Deflection < L/300 |
| Ultimate Wind Pressure Strength | Ultimate Limit State: > 4400 Pa Cyclone Tested to AS 4055 |
Structural Test Pressure (STP): 150% of Design Pressure | Class C5 (> 3000 Pa safety load) |
| Air Infiltration Resistance | Air Leakage < 0.5 L/(s·m²) at 75 Pa Air-Conditioned Rating Pass |
Air Infiltration < 0.10 cfm/ft² at 1.57 psf (75 Pa) per ASTM E283 | Class 4 (< 3 m³/(h·m²) at 100 Pa) EN 12207 Maximum Airtightness |
| Static Water Penetration | Static Pressure: 450 Pa to 700 Pa Zero Ingress Observed |
Water Resistance Test: 15% of DP (8.0 to 12.0 psf) per ASTM E331 | Class E750 to Class E1050 (750 Pa - 1050 Pa) EN 12208 Severe Weather |
| Acoustic Attenuation (Rw / STC) | Rw + Ctr: 34 dB to 44 dB Acoustic IGU Glass |
STC: 36 to 43 / OITC: 30 to 36 per ASTM E90 / E413 | Rw (C; Ctr): up to 45 (-1; -4) dB per ISO 10140 |
| Surface Corrosion Durability | AS 3715 Powder Coating / AS 1231 Anodizing (25μm Marine Grade) | AAMA 2605 Superior Fluoropolymer Coating (>4000 Hrs Salt Spray) | Qualicoat Seaside Class 2 Approved & Qualanod Certified |
Industrial Supremacy: The Guangdong Dejiyoupin (DERCHI) Advantage
Operating from Foshan, Guangdong—the recognized epicenter of the global aluminium extrusion ecosystem—DERCHI represents 25+ years of continuous engineering excellence and export leadership.
180,000 m² Automated Smart Facility
Our integrated manufacturing base in Shenke Chuangzhi Park, Foshan, integrates fully automated CNC double-head precision cutting saws, 4-axis digital milling centers, and automatic polyurethane corner injection crimping units. With over 600 skilled master fabricators and engineers, our scalable factory lines deliver an annual fenestration capacity exceeding 300,000 square meters with microscopic repeatable tolerances (<0.5mm).
- Automated profile bar storage & digital tracking
- In-house thermal break insertion & knurling testing
- Automated vertical insulated glass production line
AS 2047 & International Standards Compliance
DERCHI casement systems undergo destructive pressure testing in accredited NATA/ILAC partner laboratories. We maintain complete certified test documentation for AS 2047 (tested to extreme N6 wind conditions), AS 1288 architectural safety glazing, CE marking per EN 14351-1, and UL fire classifications. Importers and certifiers receive full compliance packets, structural engineering calculations, and thermal modeling data to ensure rapid building permit approvals.
- 100+ national patents and industrial design awards
- NATA-traceable AS 2047 / AS 4055 test reports
- ISO 9001 total quality control lifecycle auditing
Full-Spectrum OEM/ODM Customization & Support
Our dedicated technical engineering department supports architects and quantity surveyors from schematic concepts to final handover. We draft comprehensive AutoCAD shop drawings, develop custom extrusion die profiles in 15 days, and provide parametric BIM models for clashing detection. Fluent, technical English-speaking facade engineers align with AEST, NZST, GMT, and EST business hours to resolve detailing questions instantly.
- Free CAD shop drawings tailored to your door schedules
- Containerized FCL/LCL ocean freight directly from Foshan
- Heavy-duty fumigated plywood crates with EPE wrap
Commercial Procurement FAQ: Technical & Operational Inquiries
Addressing the fundamental engineering, logistic, and contractual parameters evaluated by foreign buyers, general contractors, and facade consultants.
What are the minimum order quantities (MOQs) and lead times for custom OEM/ODM casement window dies? +
For standard extrusion profiles already cataloged in our engineering inventory, our flexible production lines accommodate project orders starting from 50 square meters or combined mixed-container shipments (LCL/FCL). When creating bespoke, proprietary OEM/ODM profile systems, the tooling lead time for custom extrusion dies is approximately 12 to 15 working days, accompanied by an initial extrusion run MOQ of 500 kg per profile shape (tooling fees are credited back once cumulative order volume surpasses specified tonnage thresholds). Full-container production typically completes within 25 to 30 calendar days following architectural shop drawing sign-off.
How does your factory substantiate Australian AS 2047 and international code compliance? +
Compliance is validated through certified third-party testing reports conducted strictly according to AS 2047: Windows in Buildings – Selection and Installation, and AS 1288 for glass selection. Our casement assemblies achieve an N6 rating (the highest standard residential wind classification, with ultimate limit state wind pressures exceeding 4.4 kPa). We provide formal test certificates, air infiltration test curves (ASTM E283 / AS 4420.4), water penetration resistance data (static pressure exceeding 450 Pa), and structural deflection verification. These compliance documentation packages are formatted specifically for straightforward submittal to building certifiers, municipal councils, and structural engineering firms across Australia, New Zealand, and North America.
Which surface finishing technologies do you specify for severe coastal and high-salinity zones? +
For marine environments (within 1,000 meters of the coastline or breaking surf), we specify PVDF (Polyvinylidene Fluoride) 3-coat fluorocarbon coatings containing at least 70% Kynar 500 or Hylar 5000 resins, yielding a total dry film thickness (DFT) ≥ 35–40 microns. Alternatively, we provide Qualicoat Class 2 (Super-Durable) powder coatings that withstand accelerated 3,000-hour acetic acid salt spray (AASS) testing per ISO 9227 without blistering or chalking. We pair these exterior finishes exclusively with marine-grade 316 stainless steel friction stays, fasteners, and pivot pins to completely eliminate galvanic corrosion and surface pitting.
What hardware brands and locking mechanisms are integrated into your casement window assemblies? +
Hardware integrity dictates the operational lifecycle of a casement window. We partner with premier European and global fenestration hardware manufacturers, including Siegenia, Roto Frank, Hoppe, Sobinco, and CMECH, alongside proprietary high-tensile hardware lines. Our standard casement sash utilizes heavy-duty four-bar or five-bar friction hinges engineered from austenitic 304 or 316 stainless steel, tested for over 50,000 continuous opening-closing cycles. Multiple locking points featuring hardened steel mushroom cams engage with adjustable perimeter keeps to ensure an impermeable compression seal against water and acoustic ingress.
Can DERCHI supply custom architectural glazing makeups, including acoustic laminated and smart glass? +
Yes. Our internal automated glass processing workshop manufactures insulated glass units (IGU) customized to project-specific SHGC, VLT, U-factor, and Rw acoustic metrics. Glazing options include double or triple glazing with Low-E coatings (single, double, or triple silver Low-E on surface #2 or #4), warm-edge composite spacers (Technoform), and 95%+ Argon gas fill. For high-noise environments adjacent to transport corridors, we fabricate acoustic laminated units incorporating 0.76mm to 1.52mm acoustic PVB or structural SGP (SentryGlas) interlayers. We also supply PDLC switchable privacy glass and solar-control ceramic frit patterns on demand.
How are fragile aluminium windows and glazed assemblies protected during long-haul container shipping? +
Every window frame and sash is wrapped in low-tack protective PE film to guard the surface coatings against scratching. We encase the profile perimeters in shock-absorbing EPE foam edge protectors, wrap the units in heavy waterproof plastic sheeting, and secure the assemblies within custom-built fumigated plywood crates or rigid welded steel stillages. The assemblies are blocked, braced, and strapped using high-tensile polyester webbing inside sea containers to eliminate lateral shift, rolling shock, and marine moisture damage during long ocean transits to Sydney, Melbourne, Brisbane, Auckland, Los Angeles, or European gateway ports.
What engineering deliverables do you provide during the pre-construction submittal phase? +
Prior to cutting aluminium or releasing extrusion dies, our structural engineering team delivers comprehensive 2D AutoCAD shop drawing packages containing cross-sectional assembly details, flashing integration, anchor bracket spacing, sub-sill drainage profiles, and glass schedules. Upon request, we generate parametric Revit BIM objects (LOD 300 to LOD 350), thermal bridging FEA thermographic simulations (demonstrating exact isotherm curves and condensation risk points per ISO 10077), and finite element structural calculations validating frame deflection under regional design wind loads.
What warranty framework and after-sales support protocols does DERCHI maintain? +
We provide an industry-leading manufacturer’s commercial warranty: 10 years on structural aluminium extrusions and factory surface coatings (anodized and PVDF), 10 years on hermetic seal failure of insulated glass units, and 5 years on mechanical hardware mechanisms. In the rare event of transit damage or component defect, replacement components and glass units are expedited via priority air freight. Furthermore, our English-speaking engineering team provides ongoing remote technical consultation, video-guided installation briefings, and site-specific anchoring advice throughout your project's installation phase.
Accelerate Your Fenestration Project with Direct OEM/ODM Manufacturing
Partner directly with Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI). Transmit your architectural elevation drawings, window schedules, or custom profile sketches to our engineering team for a comprehensive structural review, BIM coordination, and factory-direct project quotation within 24 hours.