Flagship Architectural Systems & Casement Profiles
Explore our precision-machined casement series, soundproof tilt-and-turn units, heavy-duty architectural sliding barriers, and motorized curtain solutions manufactured to strict international structural standards.
Soundproof Casement Windows With Integrated Screens
Heavy Duty 86 Series Large Section Casement Window
Insulated Automatic Rolling Shutter Security Window
AS2047 Australian Certified Double Glazed Stacker Patio Doors
90mm Double Glazed Soundproof Partition Wall With Blinds
Impact-Resistant Single & Double Hung Aluminum Windows
Luxury Cast Aluminum Bespoke Lattice Screen Entry Door
180,000 m²
Modern Production Base
1,000,000+ m²
Annual Fabricated Capacity
100+
Proprietary Inventions & Patents
18,000+
Global Landmark Projects
Why Engineering Teams Choose DERCHI Factory Systems
Recognized as a "China Famous Brand" by Xinhua News Agency, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) sets the industrial benchmark for end-to-end quality control, zero-tolerance precision cutting, and international facade engineering.
Patented Anti-Burglary Locks
We hold more than 100 patented engineering innovations, including our breakthrough Four-Side Six-Point Lock technology. This proprietary multi-point lock design distributes mechanical sealing pressure uniformly across the casement sash, guaranteeing superior shear resistance, enhanced RC2/RC3 burglary deterrent, and zero frame deformation under violent thermal fluctuation.
- Class-leading perimeter lock distribution
- Cold-forged stainless components
Smart 360° Quality Control
Our Foshan smart manufacturing complex executes 360-degree quality gate auditing. From spectrometer testing of raw 6063-T5/T6 billet alloy composition to precision multi-axis CNC milling, automatic corner-crimping with structural dual-component epoxy, and helium leak testing for insulated glass units, we maintain zero-error tolerances.
- Automatic corner-injection sealant
- ISO 9001:2015 fully auditable lines
Global Regulatory Accreditations
DERCHI fenestration profiles are engineered for full cross-border compliance. Our systems carry valid testing verification for European CE (EN 14351-1), Australian AS2047/AS1288, North American NFRC thermal performance ratings, Canadian CSA, and severe coastal Florida hurricane impact resistance approvals.
- Full EN 14351-1 declaration certificates
- Direct factory export export documentation
Future Procurement Trends: Navigating Sourcing Shifts
International commercial builders, wholesale developers, and architectural specifiers are adapting to tighter ecological metrics, extended project lifecycle assessments, and streamlined vendor accountability.
Parametric BIM & Early Integration
Overseas engineering directors are eliminating legacy RFQ processes by requiring verified parametric Revit/IFC BIM objects directly from manufacturers during schematic phases. Pre-configuring opening tolerances, structural dead-load anchor calculations, and drainage thresholds prevents costly field retrofitting and accelerates construction delivery.
Whole-Building Integrated Envelopes
Sourcing windows in isolation is shifting rapidly toward coordinated building envelope procurement. General contractors prefer sourcing thermal break casement windows, ultra-wide minimal sliding partitions, heavy entrance security portals, and structural glass sunrooms from a single unified factory to ensure uniform RAL finishes and matching anodizing depth.
Whole-Life Carbon & ESG Traceability
With strict international building regulations like the EU Corporate Sustainability Due Diligence Directive and national building frameworks (such as France RE2020 and UK Part L), procurement managers are vetting raw aluminum extrusions for verifiable low-carbon smelting, post-consumer recycled billet ratios, and Environmental Product Declarations (EPDs).
Technical Evolution of Aluminium Casement Windows
Casement window design has transitioned from simple mechanical fenestration to an active, thermal-insulating architectural envelope. Below is the comparative trajectory of commercial casement technology.
| Performance Metric | Conventional Standard Systems | Next-Generation DERCHI Casements | Compliance Advantage |
|---|---|---|---|
| Thermal Transmittance (Uw) | 2.4 – 3.2 W/(m²·K) (Cold bridge risks) | 0.79 – 1.3 W/(m²·K) (Multi-chamber PA66) | Passive House / RE2020 / GEG |
| Corner Joint Construction | Mechanical screw joint + basic silicone | Cast aluminum corner cleats + dual epoxy injection | Zero Water Seepage, 50-Yr Durability |
| Acoustic Attenuation | Rw 28 – 32 dB (Standard IGUs) | Rw 42 – 48 dB (Asymmetric laminated glass) | Urban Airport & Highway Certified |
| Water Tightness (EN 12208) | Class 4A – 6A (Single EPDM gasket) | Class 9A / E1050 (Triple vulcanized EPDM) | Typhoon & Extreme Coastal Storm Safe |
| Locking Security | 2-Point standard latch handle | Patented 4-Side 6-Point anti-crowbar lock | European RC2 / RC3 Resistance |
Aluminium Casement Windows Procurement FAQ
Direct answers to technical, logistics, compliance, and custom fabrication inquiries formulated by our structural engineering division.
How do DERCHI casement windows comply with European CE Marking (EN 14351-1)?
Our complete window and door assemblies are factory-tested and audited under ISO 9001 certified production control to comply with EN 14351-1 standards. Each project consignment includes comprehensive Factory Production Control (FPC) documentation, Declaration of Performance (DoP) dossiers, CE marking identification plates, and verified third-party laboratory test metrics certifying Air Permeability (EN 12207 Class 4), Watertightness (EN 12208 Class 9A/E900), and Wind Load Resistance (EN 12210 Class C5).
What thermal break configurations are utilized to meet strict regional Uw targets?
We deploy multi-chamber polyamide PA66 GF25 insulation strips with depths ranging from 24mm up to 39mm. When combined with our argon-gas-filled triple-glazed low-emissivity build-ups (e.g., 6mm Low-E + 16Ar + 6mm Clear + 16Ar + 6mm Low-E) and Swiss warm-edge composite spacer bars, our casement systems achieve overall window thermal transmittance values down to Uw ≤ 0.8 W/(m²·K), effortlessly satisfying UK Part L, German GEG, and North American Energy Star Zone 1 standards.
How is ocean freight damage prevented during direct container shipping?
Export glass fenestration demands rugged maritime packing. DERCHI utilizes an 8-layer export-grade packing protocol: complete surface protective film, closed-cell foam profile guards, rigid structural corner protectors, vapor-barrier shrink wrapping, and heavy fumigated solid-plywood crating reinforced with steel perimeter banding. Crates are digitally mapped using container load-planning software and secured with heavy-duty ratchet straps and dunnage bags to eliminate container transit vibration.
Can hardware, handles, and RAL architectural surface finishes be customized?
Yes. We provide complete bespoke architectural flexibility. Frames can be surface-treated with Qualicoat-certified polyester powder coatings in any standard RAL color, fluorocarbon PVDF coatings for aggressive coastal atmospheres, or high-definition woodgrain sublimation. For internal locking gear, buyers can choose between our proprietary Four-Side Six-Point patented anti-burglary hardware or world-renowned European hardware mechanisms including Siegenia, Roto, Hoppe, or Sobinco.
What structural engineering support do you provide for large overseas commercial projects?
Our internal R&D engineering team of 30+ specialists provides end-to-end technical support: architectural CAD review, wind-load deflection calculations (using finite element structural modeling), thermal isothermal simulation mapping, site dimension cross-verification, physical scale mockups for visual approval, and comprehensive bilingual installation manuals accompanied by remote step-by-step engineering supervision.
What is the typical production lead time and minimum order quantity (MOQ)?
For custom residential villas or standard commercial schedules, our standard fabrication lead time is 25 to 35 business days following final shop drawing and structural calculation sign-off. Because our 180,000 m² factory campus features flexible automated CNC production lines, we support diverse project scales: we handle boutique custom villa requirements with no restrictive container MOQs as well as high-volume multi-building development runs surpassing 20,000 square meters.
Engineered to Your Exact Architectural Specifications
Submit your elevation drawings, structural window schedules, or thermal performance targets. Our direct engineering support division will prepare a comprehensive system proposal, including CAD section details, structural load ratings, and factory-direct volume pricing within 24 hours.