Acoustic Rated
Modern Aluminium Window Design Energy Efficient Noise Reduction Windows
Double Glazed
Soundproof
Commercial
Industrial Product Selection
Precision-Engineered Aluminum Double Hung & Sash Windows
Manufactured under strict ISO 9001 and AS 2047 standard compliance, our vertical sliding and architectural hung window systems integrate advanced multi-point hardware, concealed spring balances, and high-performance low-emissivity glass assemblies.
Acoustic Rated
American Standard
LANGE Aluminium Sash Windows Double Hung Spring Balance Colonial Grid
Spring Balance
Colonial Bar
Weatherstrip
Thermal Break
Double-Hung Sliding Vertical Aluminum Alloy Windows Low-E Glass
Low-E Coating
Stainless Mesh
UV Shield
Slim Sightline
Customized Double Glazed Simple Narrow Frame Balcony Windows
Narrow Stile
Double Pane
High Strength
High Security
Double Hung Window Security Latch Low-E Fly Screen System
Cam Lock
Integrated Screen
Sealed Track
Architectural Arch
Retro Arch Aluminum Frame Classic Insulated Glass Arch Window Units
Custom Curvature
Historic Profile
T6 Billet
AS 2047 Tested
Arch Australia Standard Aluminium Double Tempered Glass Hung Window
AS 2047 N6
Cyclone Rated
Tempered Glaze
Heavy Weather
Weatherproof Aluminum Double Hung Windows Stainless Net System
EPDM Gasket
Drainage Baffle
Corrosion Proof
Engineering Whitepaper
Architectural Mechanics of Premium Double Hung Extrusions
A precision-manufactured aluminum double hung window factory must transcend aesthetic replication to address the complex thermodynamics and structural wind load pressures of modern building envelopes. Unlike conventional single-hung configurations, double hung systems require both the upper and lower sashes to operate independently along precision-milled vertical jambs. This dual movement demands extraordinary dimensional tolerances—typically calibrated within ±0.5mm across our primary extrusion line.
Our direct manufacturing process utilizes virgin 6063-T5 and structural 6063-T6 grade aluminum billets. Frame structural integrity is augmented with multi-chambered polyamide (PA66 GF25) thermal barriers. These thermal isolators physically decouple the exterior aluminum skin from the interior ambient climate, dramatically curbing conductive heat transfer and driving U-factors down toward rigorous passive building requirements.
For high-rise coastal developments and hurricane-prone geographic corridors, sash-to-frame sealing is achieved via continuously vulcanized ternary ethylene propylene diene monomer (EPDM) weather gaskets. Coupled with dual-fin pile weatherstripping, our fenestration matrices suppress air infiltration down to less than 0.1 CFM/ft², easily fulfilling high-velocity hurricane zone (HVHZ) and Australian AS 2047 N6 cyclonic impact parameters.
180K㎡
Integrated Production Facility
N6 / C4
AS 2047 Wind Load Rating
≤ 1.4
W/(㎡·K) Low U-Value Range
42 dB
Acoustic Sound Attenuation
Market Intelligence
Future Procurement Trends in Commercial Fenestration (2025–2030)
Strategic sourcing directors, commercial developers, and high-volume facade contractors are pivoting away from fragmented supply channels toward vertically integrated, certified factory conglomerates.
Full EPD & Embodied Carbon Traceability
Global procurement standards increasingly mandate Environmental Product Declarations (EPD). Tier-1 architectural projects in North America, Europe, and Oceania evaluate aluminum double hung window factories on recycled scrap intake and low-carbon hydroelectric smelting protocols, ensuring lower embodied carbon per aperture.
Integrated BIM-to-Fabrication Pipelines
Procurement teams are cutting lead times by demanding native Autodesk Revit and IFC parametric BIM families directly from the factory engineering department. Direct data transmission from architectural schedules to CNC profile machining centers eliminates shop-drawing translation errors and accelerates multi-phase building handovers.
Consolidated Whole-Envelope Sourcing
Developers increasingly prefer single-source manufacturing partners who can supply double hung windows alongside matching entrance systems, curtain wall modules, and pivot doors. This unified approach guarantees batch-level finish color matching (AAMA 2604/2605) and synchronized project site deliveries.
R&D Roadmap
Technological Evolutions Shaping Modern Double Hung Systems
From constant-force balancing mechanics to advanced glazing coatings, engineering innovations are addressing historical performance trade-offs in vertical sliding systems.
Ultra-Precision Constant-Force Balances
Traditional spiral balances and weight-and-pulley systems are being replaced by factory-calibrated stainless steel coil constant-force balance cartridges. These mechanical assemblies ensure silky, single-finger gliding operation across sashes exceeding 70kg in weight, even with thick acoustic laminated IGU stacks.
Advanced Tilt-In Cleaning Mechanisms
Commercial mid-rise residences demand low-maintenance solutions. Modern aluminum double hung engineering incorporates concealed zinc alloy pivot shoes and quick-release tilt latches, allowing both upper and lower sashes to tilt inward safely to 90 degrees for interior-accessible glass sanitation.
Triple-Silver Low-E & Warm-Edge Spacers
Factory-assembled IGUs incorporate vacuum-deposited triple-silver magnetron sputtering Low-E glass configurations filled with 90%+ Argon gas. Paired with non-conductive composite warm-edge spacers, this technology suppresses condensation, controls Solar Heat Gain (SHGC ≤ 0.22), and protects interior finishes.
Technical Specifications
Engineering Benchmarks: Factory Direct vs. Standard Market Windows
A granular side-by-side performance breakdown highlighting the verifiable engineering thresholds maintained within our Foshan production facility.
| Performance Criterion | DERCHI Engineered Double Hung | Standard Commercial Commodity | Architectural Testing Standard |
|---|---|---|---|
| Alloy Composition & Temper | Primary Virgin 6063-T5 / 6063-T6 (Wall thickness ≥ 1.8mm - 2.0mm) | Secondary Recycled Aluminum (Wall thickness ≤ 1.2mm - 1.4mm) | ASTM B221 / GB 5237 |
| Thermal Decoupling | PA66 GF25 Polyamide Strut Barrier (Width 20mm - 24mm) | Non-thermal or cheap PVC strip insertion | EN 14024 Structural Stability |
| Design Wind Load (Air/Water) | Passes AS 2047 N6 rating; Water resistance ≥ 600 Pa | Generic domestic thresholds (Water resistance ≤ 250 Pa) | AS/NZS 4420 / ASTM E331 |
| Glazing Architecture | 5mm + 12A + 5mm or 6mm + 16A + 6mm Tempered Low-E + Argon Gas | Single pane annealed or basic untreated double glass | IGCC / EN 1279 Certified |
| Balancing Operational Lifespan | Stainless constant force spring rated for 25,000+ continuous cycles | Low-grade spiral balances prone to tension loss (< 5,000 cycles) | AAMA 902 Verified |
Enterprise Infrastructure
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI)
Ranked among the Top 10 premium door and window manufacturing powerhouses in China, DERCHI commands an expansive 180,000㎡ industrial park situated in Shishan Town, Nanhai District, Foshan. Backed by over 25 years of specialized metallurgical and fenestration engineering, we operate over 600 skilled technicians, automated CNC extrusion machining lines, and in-house glass processing hubs.
Our comprehensive product matrix extends across premium aluminum double hung windows, architect-specified entry doors, massive exterior pivot doors, and complete building envelope systems. With over 100 invention, appearance, and technology patents, DERCHI products are independently tested to pass demanding CE, ISO 9001, Australian AS 2047, and UL fire-rated certifications.
Positioned centrally near major Pearl River Delta shipping terminals, DERCHI facilitates streamlined logistics routing across the Philippines, Singapore, Malaysia, North America, Australia, and the Middle East, offering dedicated GMT+8 technical consultation, precision CAD shop drawings, and tailored structural engineering guidance.
180,000㎡ Manufacturing Base
600+ Full-Time Specialists
100+ Patents & Certifications
25+ Years Industrial Heritage
Competitive Advantage
Why International Developers Source Direct from Our Factory
Eliminate intermediate markups and mitigate project execution risk with an enterprise-grade Chinese manufacturing partner dedicated to full-lifecycle quality.
Advantage 01
Single-Source Ecosystem
Consolidate your orders. Procure architectural aluminum double hung windows, grand entry pivot doors, and specialized curtain walls in one shipment to streamline project logistics and color management.
Advantage 02
Verified Global Compliance
Our products possess accredited testing documentation across CE, ISO 9001, AS 2047 N6, and UL fire requirements, facilitating straightforward municipal approvals and building code pass rates.
Advantage 03
Full CAD / BIM Support
Receive comprehensive shop drawings, anchor detail schematics, structural load calculations, and tailored glass performance data directly from our bilingual engineering group prior to extrusion.
Advantage 04
Seaworthy Heavy Packaging
All finished units are wrapped with scratch-resistant poly film, edged with reinforced corner protectors, and securely packed into fumigated multi-layer plywood crates to ensure zero transit damage.
Procurement Clarity
Frequently Asked Questions: Aluminum Double Hung Sourcing
Essential engineering and commercial considerations for architects, developers, and wholesale buyers importing fenestration systems from China.
What are the key structural benefits of sourcing aluminum double hung windows over vinyl (uPVC) alternatives? +
Aluminum alloys (specifically 6063-T5 and T6) possess an elastic modulus and tensile yield strength vastly superior to unplasticized vinyl. This structural rigidity allows for dramatically slimmer sightlines and expansive sash glass areas without risk of bowing under high wind loads. Moreover, aluminum exhibits exceptional dimensional stability across severe thermal fluctuations (-30°C to +75°C), entirely eliminating the sash sticking, thermal warping, and yellowing common to PVC units in coastal or tropical climates.
How does your factory ensure air and water tightness on double hung vertical sliding tracks? +
Vertical sliding windows historically faced sealing vulnerabilities along the horizontal meeting rails and jamb tracks. DERCHI solves this through a dual-barrier approach: engineered interlocking meeting stiles lined with continuous vulcanized EPDM gaskets, combined with high-density silicone-treated mohair pile weatherstripping equipped with central polymer fins. Additionally, precision weep-hole baffling channels dynamic wind-driven water safely out through concealed drainage channels while preventing cold air blowback.
Can our project specify custom finishes, anodizing classes, or historic colonial grid layouts? +
Yes, every production order is bespoke. We operate certified powder coating and fluorocarbon (PVDF) lines compliant with AAMA 2604 and AAMA 2605 requirements, delivering 20+ year weatherability against chalking and UV fading. For architectural heritage properties, we manufacture internal colonial grids (between-the-glass), external surface-adhered architectural SDL (Simulated Divided Lite) bars, and custom radius-arched structural frames manufactured using computerized bending jigs.
What documentation and shop drawing approval workflows do you provide prior to manufacturing? +
Following initial schedule review, our engineering office develops detailed CAD shop drawings outlining rough opening (RO) tolerances, frame profiles, sill pan configurations, anchoring bracket placements, glass buildup specifics, and finish codes. Manufacturing initiates only upon formal, signed sign-off from your architectural team. We also provide third-party laboratory test reports for wind load, water penetration, and thermal modeling data.
What are the typical lead times and port logistics for containerized export shipments? +
Standard factory production lead time is 25 to 35 days following final shop drawing and finish approval, depending on order scale and custom hardware specifications. Located in Foshan, Guangdong, we route containers via the Pearl River Delta’s premier deep-water facilities: Guangzhou (Nansha) or Shenzhen (Yantian/Shekou) ports. This guarantees fast transit times to Southeast Asia (4-8 days), Australia (14-18 days), the US West Coast (18-22 days), and the Middle East (20-25 days).
Partner with an Authoritative Chinese Window Manufacturer
Initiate direct technical consultation with our engineering directors. Submit your window schedules, elevation blueprints, or project tender specifications for complimentary shop drawings and a detailed factory quotation.
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