Featured Product Lines
Architectural Glazing Systems & Frameless Enclosures
Engineered for high wind load performance, zero-sightline panoramic views, and extreme thermal insulation across worldwide residential and commercial developments.
25+
Years Engineering Expertise
180,000㎡
Modern Production Base
600+
In-House Manufacturing Staff
100+
Patents & Global Certs
Direct Factory Strengths
Why Global Contractors Partner with Guangdong Dejiyoupin (DERCHI)
Decoupling the supply chain bottlenecks through integrated extrusion, CNC fabrication, robotic glass bonding, and end-to-end container consolidation from Foshan, China.
One-Stop Architectural Consolidation
Integrate wholesale frameless window assemblies, exterior thermal-break sliding portals, heavy cast aluminum security pivot doors, and motorized driveway systems in unified shipping containers. Eliminate mixed-vendor logistical overhead and cut ocean freight costs up to 32%.
Stringent International Certifications
Our structural systems hold CE, ISO9001, AS2047 N6 (Australia cyclone standard), and UL Fire-Rated certifications. Every frameless run is calculated against building envelope wind-loading guidelines and international fenestration deflection ratings (L/175 and L/240).
Free CAD & Structural Shop Drawings
Never leave structural glass attachments to guesswork. Our specialized engineering department drafts full 2D elevation schedules, detailed anchor-point cross-sections, and 3D BIM integration models at zero cost before tooling and extrusion cut-offs begin.
Real-Time Global Engineering Support
Bilingual senior façade project coordinators synchronize schedules with global time zones across North America, Europe, Australia, and South America. We deliver real-time video inspections, factory VR audits, and live installation troubleshooting on site.
Export-Grade Protective Packaging
Frameless and minimal architectural elements require zero-deflection logistics. We employ fumigated custom steel-reinforced timber crates, vacuum-sealed desiccants, high-density edge-protectors, and anti-abrasion polymer coatings rated for long-haul maritime routes.
Primary Billet 6063-T5/T6 Metallurgy
Zero recycled scrap content. Every extruded framing perimeter is forged from primary A00 aluminum ingots with high tensile strength (≥160 MPa) and yield strength (≥110 MPa), paired with AkzoNobel or PPG fluorocarbon PVDF finishes backed by a 20-year weatherability warranty.
Engineering White Paper: Technical Evolution of Aluminium Frameless Windows in Modern Architecture
The contemporary architectural movement toward biophilic spaces and minimalist fenestration has created unprecedented demand for wholesale frameless aluminium window systems. Originally categorized as decorative architectural glazing, the frameless window has undergone a structural revolution over the past five years. Today, it stands as an engineered structural building envelope component capable of spanning full story heights while resisting intense cyclic wind pressures, driving energy conservation, and delivering an uninterrupted sightline of over 98% visual surface area.
As a leading Chinese supplier and exporter headquartered in the manufacturing heart of Foshan, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates at the forefront of this industrial transition. Spanning an expansive 180,000㎡ industrial complex, we combine automated aluminum profile thermal-break lines with robotic double- and triple-pane structural glass lamination units, ensuring tier-one performance benchmarks for international builders, developers, and wholesale distributors.
Key Semantic Structural Insight: Frameless vs. Traditional Minimalist Fenestration
The term "frameless window" in commercial procurement does not denote an absolute absence of metal; rather, it defines an engineered envelope configuration where structural aluminum sub-frames (typically 6063-T5/T6 alloy) are fully concealed, embedded within perimeter building soffits, finished flooring, and exterior wall cladding. The exposed outer pane utilizes structural silicone sealants or stepped-edge monolithic tempered glass that masks the interior thermal chassis entirely.
Material Metallurgy & Structural Concealment Engineering
Achieving total concealment while preserving structural rigidity requires precision extrusion tolerances. Standard commercial aluminum profiles allow dimensional variances that can cause deflection stresses on non-framed structural glass. At DERCHI, our hidden frame profiles are extruded with precision-milled tolerances governed within ±0.15mm. The sub-frame profiles are engineered with integrated drainage troughs and high-modulus EPDM secondary gaskets that prevent water pooling within the building envelope.
Our flagship frameless assemblies incorporate a 40mm continuous polyamide (PA66 GF25) thermal barrier. By severing the metal bridge between exterior and interior substrates, the system lowers overall fenestration U-values down to 0.82 W/(m²·K) when configured with argon-filled low-emissivity (Low-E) triple-glazed insulated glass units (IGUs). This thermal containment prevents interior surface condensation in frigid sub-zero conditions and reduces mechanical HVAC loads by up to 34% in tropical coastal villas.
Comparative Technical Matrix: Frameless Systems vs. Standard Aluminum Windows
| Performance Metrics | DERCHI Concealed Frameless Series | Standard Commercial Thermal Windows | Test & Compliance Standards |
|---|---|---|---|
| Visible Sightline Width | 0 mm (Full Floor/Ceiling Flush Embedment) | 50 mm – 92 mm Face Width | Architectural Visual Index |
| Air Infiltration Rate | < 0.1 m³/(m·h) at 100 Pa | 0.5 – 1.5 m³/(m·h) at 100 Pa | ASTM E283 / EN 12207 Class 4 |
| Water Penetration Resistance | Static: 900 Pa | Cyclic: 1200 Pa | 300 Pa – 450 Pa | ASTM E331 / AAMA 501.1 |
| Structural Wind Load | Design Pressure: ±4500 Pa (N6 Level) | 1500 Pa – 2500 Pa | AS2047 / ASTM E330 / GB/T 7106 |
| Acoustic Attenuation (STC/Rw) | Rw 42 – 46 dB (with Acoustic PVB) | Rw 30 – 34 dB | ISO 717-1 / ASTM E413 |
| Thermal Transmittance (U-Value) | 0.82 – 1.25 W/(m²·K) | 1.85 – 2.80 W/(m²·K) | NFRC 100 / EN ISO 10077-1 |
Future Sourcing Trends for Aluminium Frameless Windows (2025–2030)
As international supply chains optimize for efficiency and sustainability, real estate developers and building product importers are overhauling their procurement criteria. Importers who understand these shifts can protect margins and capture emerging market share:
1. Large-Format Motorization & Concealed Magnetic Levitation (Maglev): Traditional manual sliding frameless units are giving way to whisper-quiet brushless servo-motor drives and magnetic levitation tracks. Panels weighing in excess of 800 kg can glide smoothly with effortless touch activation, smartphone integration, or smart-home environmental automation.
2. Vacuum Insulated Glazing (VIG) Hybridization: Over the next half-decade, the integration of ultra-thin vacuum glazing will allow frameless systems to match the thermal resistance of solid insulated walls (U-values below 0.60 W/(m²·K)) while reducing panel thickness by nearly 40%. This breakthrough will significantly lower shipping weights and ocean freight costs from China.
3. Prefabricated "Plug-and-Play" Flashing Sub-Sills: In the past, frameless windows demanded costly on-site glazing labor. Next-generation systems engineered by DERCHI feature factory-machined sub-sill drainage modules with pre-aligned laser datum points, reducing on-site installation labor by over 50% for international building crews.
4. Low-Carbon "Green" Aluminum Verification: International import mandates (such as the EU's Carbon Border Adjustment Mechanism - CBAM) are compelling suppliers to utilize hydropower-smelted primary aluminum billets. Exporters that provide verified environmental product declarations (EPDs) will gain a substantial edge in enterprise commercial tenders.
Frequently Asked Questions: Sourcing Frameless Systems from China
How do frameless aluminum windows achieve watertight integrity without visible face frames?
Watertight integrity is achieved through an engineered cascading sub-floor drainage system. The base track is recessed below finished floor levels and features concealed weep holes linked to continuous internal drainage troughs. When wind-driven rain hits the vertical glass panes, it flows downward into the sub-sill channel and discharges via integrated one-way drainage flaps, maintaining performance at test pressures up to 900 Pa without internal leakage.
Can frameless window systems be customized to meet extreme local hurricane or seismic codes?
Yes. Customization is supported by our engineering team through project-specific structural shop drawings. By utilizing heavy-wall 6063-T6 aluminum profiles with 3.0mm+ structural webs, coupled with laminated tempered glass containing 1.52mm or 2.28mm SentryGlas (SGP) ionoplast interlayers, our systems meet Miami-Dade large missile impact standards, AS2047 N6 cyclonic ratings, and high-frequency seismic inter-story drift requirements.
What is the standard lead time and sea freight packaging methodology for custom export orders?
Standard production lead time ranges from 25 to 35 working days following signed approval of CAD shop drawings and finish sign-off. For oceanic logistics, all glass units and concealed extrusions are packed in IPPC-certified fumigated steel-corner wooden crates. Desiccants are heat-sealed inside moisture-proof barriers, and all glass surfaces are protected with protective electrostatic masking films to prevent scratches during crane loading and container shunting.
How does Guangdong Dejiyoupin (DERCHI) support overseas contractors during installation?
Every shipment includes an itemized structural packing index with labeled opening numbers matching the architectural drawings. We provide comprehensive bilingual installation shop manuals, step-by-step exploded 3D CAD anchor schematics, and video tutorials. Additionally, our sales engineers provide scheduled real-time video conference calls aligned with your local job site hours to assist your installation teams.
Can multiple product categories—such as entry doors, windows, and garage gates—be consolidated in one container?
Yes, this is one of DERCHI's primary competitive advantages. From our unified 180,000㎡ industrial complex, you can consolidate wholesale frameless windows, thermal-break sliding doors, cast aluminum villa entry doors, and motorized garage portals into a single 40ft HQ container. This eliminates the expense, damage risk, and customs complexity of coordinating multiple independent suppliers.