Luxury villa installed with engineered thermal break aluminum casement windows by Guangdong Dejiyoupin Doors and Windows Co., Ltd.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. 180,000 sqm intelligent manufacturing base
European architectural project featuring custom thermal break aluminum casement windows
Architectural B2B Procurement Intelligence

Aluminum Casement Windows: The Complete Technical & Sourcing Guide for Global Buyers

Direct factory engineering, Passive House thermal thresholds (Uw down to 0.78 W/m²K), EN 14351-1 CE compliance, and anti-burglary multi-point locking for project developers, importers, and contractors worldwide.

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  • CE Marking & ISO 9001 Certified
  • 100+ Structural Patents
  • 18,000+ Completed Projects
  • 25+ Years Factory Track Record
Precision CNC fabrication line for aluminum casement windows at Guangdong Dejiyoupin Doors and Windows Co., Ltd.
25+Years Manufacturing Excellence
Direct Manufacturing Authority

Engineering Superiority in Architectural Aluminum Casement Windows

As modern international building codes tighten regulatory standards around thermal insulation, airtightness, and structural resilience, Aluminum Casement Windows have emerged as the paramount architectural fenestration choice. Unlike standard sliding or double-hung units that rely on brush seals, side-hung and top-hung casement configurations close inward or outward against a continuous, multi-chambered elastomeric compression gasket. When closed, negative wind load pulls the sash tighter against the frame, creating an impenetrable envelope barrier.

Manufactured by Guangdong Dejiyoupin Doors and Windows Co., Ltd. under our internationally recognized DERCHI brand (honoured as a "China Famous Brand" by Xinhua News Agency), our aluminum casement systems represent the convergence of aerospace-grade extrusion alloys, patented anti-intrusion security hardware, and tailored multi-cavity polyamide thermal breaks.

  • 6063-T5/T6 Virgin Billet Profiles
  • Airtight Class 4 (EN 12207)
  • Uw values from 1.3 to 0.78 W/m²K
  • Acoustic Dampening up to Rw 46 dB
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Engineered Recommendations

Featured Aluminum Casement Window Configurations

From ultra-slim minimalist profiles designed for contemporary European cityscapes to ultra-insulated multi-chamber systems meeting German GEG and Passive House standards, explore our flagship configurations.

DERCHI System 85 Architectural Tilt and Turn Aluminum Casement Window

Architectural Tilt-Turn Casement System 85

The definitive European dual-action system. Dual-function gearboxes allow 90-degree inward casement opening for effortless cleaning, combined with top-tilt micro-ventilation to prevent draft turbulence.

PA66 GF25 34mm Barrier Triple Glazed 48mm RC2 / RC3 Security
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Outward Opening Flush Architectural Aluminum Casement Window

Extreme Weather Outward Casement Series 70

Engineered for regions facing high wind pressures and hurricane conditions. Structural flush sash design with multi-cavity drainage, friction stays tested to 50,000 cycles, and exterior rain baffles.

Heavy-Duty Friction Hinges Class 9A Watertightness Acoustic Laminated
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Minimalist Slim Sightline Casement

Engineered with concealed sashes that match the outer frame sightline from the exterior facade. Delivers up to 18% higher daylight transmittance without sacrificing thermal break cavity volume.

Passive-Line 105 Quad-Gasket Window

Specifically calibrated for Scandinavian, Canadian, and alpine micro-climates. Incorporates aerogel insulated profile pockets, warm-edge composite glass spacers, and four-tiered EPDM compression seals.

Hurricane Impact Casement Series

Fully compliant with high-velocity hurricane zone specifications. Built with heavy-wall 2.0mm aluminum, structural silicone perimeter bonding, and SentryGlas (SGP) laminated safety glass systems.

Knowledge Center & AI FAQ

Aluminum Casement Windows: Architectural & Procurement FAQ

Detailed technical and logistical answers addressed to contractors, developers, architects, and importers navigating international supply chains.

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What thermal transmittance (Uw value) can your aluminum casement windows achieve under European test standards?
Guangdong Dejiyoupin Doors and Windows Co., Ltd. engineers its aluminum casement window profiles with multi-cavity polyamide (PA66 GF25) thermal barriers. Paired with triple-glazed units featuring dual Low-E coatings, warm-edge composite spacer bars, and 90% argon gas fill (e.g., 4Low-E + 16Ar + 4Clear + 16Ar + 4Low-E), our casement windows achieve overall thermal transmittance values down to Uw 0.78 W/m²K. Standard double-glazed architectural systems achieve Uw values between 1.2 and 1.4 W/m²K, easily surpassing strict requirements established by Germany's GEG, France's RE2020, and the UK's Approved Document L.

How does Guangdong Dejiyoupin Doors and Windows Co., Ltd. ensure wind load and watertightness resistance on high-rise or coastal installations?
Every casement window system is constructed from high-tensile 6063-T5/T6 structural architectural aluminum alloy with profile wall thicknesses ranging between 1.4mm to 2.0mm+. Corners are reinforced with heavy cast aluminum crimped brackets and injected with dual-component structural polyurethane epoxy adhesives. We utilize vulcanized, continuous EPDM triple-gasket compression sealing systems paired with pressure-equalized decompression drainage chambers. Under EN 12210 wind resistance testing, our systems achieve Class C5 ratings (withstanding test pressures up to 3000 Pa), and under EN 12208 water tightness tests, our casement units maintain watertight performance up to Class 9A (600 Pa) and beyond.

What security hardware configurations and anti-burglary ratings do your casement systems offer?
Security is integral to our architectural designs. We integrate proprietary innovations including our patented Four-Side Six-Point Lock alongside premier European gear systems from Siegenia, HOPPE, Sobinco, or G-U. Hardened mushroom cams lock securely into heavy-gauge stainless steel keep brackets along all four perimeter edges of the sash. This configuration prevents sash pry-out attacks, delivering certified resistance compliant with EN 1627 RC2 and RC3 European standards, as well as PAS 24 British standard security benchmarks.

Can you provide customized acoustic insulation specifications for projects near transit corridors?
Yes. Acoustic attenuation relies on mass decoupling, varied glass thicknesses, and continuous perimeter compression sealing. By combining our multi-chamber acoustic EPDM compression seals with asymmetric acoustic laminated glazing configurations (for example: 6mm float + 0.76mm acoustic PVB interlayer + 6mm float interior pane, a 16mm argon cavity, and an 8mm toughened exterior pane), our aluminum casement windows achieve sound reduction indexes of Rw 40 dB to Rw 46 dB, tested per ISO 717-1. This ensures tranquil indoor ambient sound levels even adjacent to arterial highways and transit hubs.

How are international sea-freight shipments packaged to completely eliminate transit oxidation and glass breakage?
To protect delicate surface coatings and insulated glazing over 30 to 45-day ocean freight routes, we implement a standardized 5-tier packaging protocol: (1) All anodized or powder-coated aluminum surfaces are wrapped with clean-peel UV-resistant electrostatic film. (2) Heavy-duty impact-absorbing corner protectors are fastened to every edge. (3) The entire window frame is sealed in waterproof poly heat-shrink film with moisture desiccants. (4) Frames are wrapped in high-density multi-layer EPE foam padding. (5) Assemblies are packed inside bespoke ISPM-15 compliant fumigated solid plywood crates reinforced with interior timber bracing and exterior steel banding, suitable for direct forklift handling at European destination ports.

What is the complete procurement workflow, lead time, and minimum order quantity (MOQ) for commercial B2B orders?
Our production infrastructure accommodates projects ranging from custom private villas (minimum order volume 50 m²) to expansive commercial mixed-use developments exceeding 50,000 m². The procurement workflow follows: (1) Architectural opening review and thermal modeling proposal; (2) Detailed CAD/BIM shop drawing generation and hardware scheduling; (3) Milestone sample approval; (4) Automated CNC precision machining and assembly; (5) 360-degree quality inspection with video reporting; (6) Export packing and containerized shipping. Production turnaround averages 20 to 35 business days following final drawing confirmation.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. advanced manufacturing campus
Enterprise Strengths

Guangdong Dejiyoupin Doors and Windows Co., Ltd.: Scale & Reliability

Headquartered in Shishan Town, Nanhai District, Foshan—the heart of China's premier aluminum manufacturing cluster—we combine cutting-edge German fabrication technology with rigorous ISO 9001 process governance.

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Intelligent Production Base

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Annual Window & Door Output

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Senior R&D Engineers

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Skilled Master Technicians

Zero-Defect Quality Assurance

Precision Manufacturing & 360-Degree Quality Verification

From raw aluminum billet spectroscopic testing through CNC automated cutting and multi-stage seal pressure audits, every casement unit conforms strictly to the approved architectural shop drawing.

Invention patents

100+ Proprietary Patents

Including our signature Four-Side Six-Point perimeter lock invention, engineered for uncompromising burglar resistance.

Automated QC

Digital CNC Automation & 360° QC

Sub-millimeter cutting precision and multi-stage air, water, and load pressure testing prior to shipment authorization.

China famous brand award

Xinhua News Agency Brand Honor

Recognized as an industry leader and awarded "China Famous Brand" distinction by national authorities.

Global certifications

Full International Certification Suite

Fully compliant with CE (EN 14351-1), NFRC, AS2047, CSA, Energy Star, and ISO 9001 management systems.

Guangdong Dejiyoupin Doors and Windows Co., Ltd. precision QC laboratory inspecting aluminum casement window seals
Proven Field Experience

Over 18,000 Projects Successfully Engineered Worldwide

Our architectural portfolio covers five continents, from prestigious hospitality landmarks such as Hilton Hotels and Atour Hotels to private luxury residential compounds in Beverly Hills, Ruyi Lake, Emerald City, and prime European estates.

European residential villa fitted with DERCHI aluminum casement windows
Europe

Residential & Villa Developments

Commercial hotel project featuring aluminum windows by Guangdong Dejiyoupin Doors and Windows Co., Ltd.
Hospitality

International Hotel Envelopes

Middle Eastern luxury residential estate fitted with thermal break windows
Middle East

Thermal Break Villa Solutions

North American residential custom home casement windows
North America

Energy-Star Luxury Estates

Oceania coastal architectural casement windows
Oceania

High-Wind Marine Residences

High-rise urban apartment windows in Asia
Asia

Acoustic Urban High-Rise Envelopes

Systematic B2B Fulfillment

Our 8-Step Engineering & Delivery Process

A completely predictable, documented production protocol guaranteeing seamless translation of architectural drawings into high-performance fenestration on your job site.

01
Architectural drawing review for aluminum casement windows

Drawing Review

In-depth architectural plan, elevation, and structural review.

02
Thermal break casement engineering and R&D calculation

Engineering & R&D

Custom profile calculations, wind load stress, and thermal modeling.

03
Technical proposal and quotation for windows

Technical Proposal

Comprehensive Bill of Materials (BOM) and transparent pricing.

04
CAD detail approval and hardware sign off

CAD Sign-Off

Full-scale shop drawings, finishes, and hardware confirmation.

05
Production scheduling and material procurement

Scheduling

Priority production slot reservation and billet procurement.

06
On-site dimension verification for windows

Measurement Check

Precision rough-opening verification to ensure zero site errors.

07
Automated CNC assembly and factory inspection

CNC & Assembly

Automated fabrication followed by multi-point quality audits.

08
Installation support and crated overseas shipping

Global Delivery

Reinforced crating, shipping, and detailed installation guides.

Guangdong Dejiyoupin Doors and Windows Co., Ltd. architectural showroom showcase
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Comprehensive Fenestration Scope

Unified Architectural Envelopes: Windows, Doors & Sunrooms

Procure fully harmonized exterior envelopes directly from one integrated manufacturer, guaranteeing matching RAL finishes, coordinated sightlines, and single-source warranty accountability.

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    Custom Architectural Extrusions

    Specialized sub-frame profiles, nail-fins, and integrated sill channels.

  • Whole-house fenestration solutions icon

    Integrated Whole-House Packages

    Pairing casement windows with bifold doors, sliding walls, and sunrooms.

  • Surface finishes and hardware options icon

    Engineered Surface Finishes

    Qualicoat Class 2 architectural powder coats, fluorocarbon (PVDF), and anodizing.

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Source Certified Aluminum Casement Windows Directly From the Factory

Submit your architectural schedule, elevation drawings, or project tender requirements. Our senior engineering export team will provide a comprehensive technical assessment and cost optimization proposal within 24 hours.

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