Zenit Window
Precision Architectural Aluminum Openings
Explore our top-tier export range engineered for high structural integrity, weather protection, and acoustic performance.
OUNA Precision Made Aluminum Wood Interior Door Ensures Perfect Fit for Your Space Custom Sizes
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OUNA Triple Glazed Casement windows Hurricane Impact Proof Aluminum windows with Mosquito Net Double Tempered Glass Window
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OUNA Good Insulation Automatic Sectional Overhead Garage Door with Aluminum Alloy High Insulated Garage Door
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OUNA High Quality Customizable 8x7 Modern Electric Garage Door Hurricane Resistant Full Board Galvanized Steel Wholesale
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OUNA High Quality Thermal Break Aluminum Wood Composite Door Energy Saving and Soundproof for Luxury Villa Project Custom Size
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OUNA Aluminum Roof Access Hatch with Skylight Function Waterproof and Insulated for Ceiling Access and Natural Light Combined
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OUNA Rolling Open Style Aluminum Skylight with Hidden Track Design Creates a Sleek Modern Look for Villa and Modern Homes
View Product SpecsChengdu Zenit Window & Door Co., Ltd.
A leader in custom architectural envelope manufacturing, delivering industrial-grade aluminum double door systems globally.
Founded in 2015, Chengdu Zenit Window & Door Co., Ltd. operates a state-of-the-art 25,000-square-meter manufacturing facility dedicated to engineering high-precision exterior and interior opening systems. Backed by 11 years of deep industry technical expertise and 8 years of global trade experience, our enterprise achieves an annual export turnover reaching $26 million. Our primary export footprints span high-compliance architectural markets across North America, Australia, and Western Europe, catering directly to luxury residential home builders, commercial architectural contractors, and Tier-1 building material wholesalers.
At Zenit, structural reliability and quality control are foundational. Quality assurance is meticulously governed by a dedicated team of 35 certified QA/QC inspectors who perform rigorous air permeability testing, water tightness verification under extreme wind pressures, and multi-axis frame corner tensile strength evaluations. Supported by a robust network of over 600 qualified supply chain partners, Zenit delivers comprehensive end-to-end customization options. These include advanced polyamide thermal break profiles, custom anodized and PVDF powder-coated finishes, and acoustically insulated triple-pane glass units. Driven by an active R&D division of 42 senior structural engineers, Zenit successfully engineered and released 50 new architectural window and door systems over the past fiscal year alone.
Global Trends & B2B Procurement Intent for Aluminum Double Doors
Strategic analysis of evolving architectural preferences, carbon neutrality standards, and commercial procurement strategies.
Ultra-Slim Sightlines & Maximum Glazing
Modern architectural design heavily emphasizes seamless indoor-outdoor integration. High-tensile 6063-T5 aluminum alloys allow factories to produce ultra-narrow sightlines without compromising wind-load resistance or structural deflection metrics.
Thermal Efficiency & Net-Zero Codes
Stringent thermal standards (e.g., ENERGY STAR 7.0, Title 24, and EU EPBD directives) drive global procurement toward multi-cavity thermal break extrusions featuring PA66 polyamide barriers, reducing building HVAC energy loss by up to 40%.
Smart Access & Multi-Point Security
Global procurement intent has shifted rapidly toward doors pre-engineered for smart home ecosystems, incorporating motorized dual-latch systems, biometric entry, and heavy-duty multi-point German locking mechanisms for superior intruder defense.
Understanding B2B Sourcing Demands for Architectural Projects
Commercial architectural buyers, estate developers, and building hardware distributors no longer search simply for standard off-the-shelf door profiles. Modern procurement strategies require original equipment manufacturers (OEM) and custom design factories (ODM) capable of delivering tailored structural calculations, custom extrusion dies, and standardized international testing certificates.
Custom OEM Aluminum Double Doors provide the exact balance of structural strength, aesthetic customization, and extreme weather endurance necessary for high-density multi-family projects, coastal villas, and high-traffic commercial portals. Zenit’s manufacturing framework bridges the gap between intricate design requirements and high-volume, cost-effective factory production.
Factory Execution & Machine Infrastructure
Take an insider look at our 25,000m² manufacturing plant, showcasing advanced CNC machining, thermal strip insertion, dynamic assembly, and rigorous quality inspection.
Macro Architectural Solutions & Material Engineering
Technical breakdowns of profile geometry, thermal insulation barrier dynamics, surface treatment resilience, and glazing setups.
Aluminum double doors serve as critical structural components within modern building envelopes. Achieving superior longevity, operating smoothness, and energy efficiency demands strict adherence to thermal break technology and material science.
| Technical Feature | OEM Factory Standard Specification | Custom Project Options |
|---|---|---|
| Profile Alloy & Temper | High-grade 6063-T5 / 6063-T6 Extruded Aluminum Alloy | 6061-T6 for ultra-high structural wind pressure demands |
| Profile Wall Thickness | 2.0mm – 3.0mm primary structural wall thickness | Up to 4.0mm heavy-duty commercial reinforced profiles |
| Thermal Insulation | PA66 GF25 Polyamide Thermal Barrier Strips (24mm - 34mm) | Aero-gel injected cavities for extreme arctic climates |
| Glazing Architecture | 5mm+12Ar+5mm Double Tempered Low-E Argon Filled Glass | Triple Tempered, Laminated Hurricane Impact, Smart Tint Glass |
| Thermal Transmittance (U-Value) | 1.4 – 1.8 W/m²·K (Standard Thermal Break Setup) | Down to 0.8 W/m²·K (Passive House Standard compatible) |
| Surface Finishes | AkzoNobel / PPG Fluorocarbon (PVDF) Powder Coating (25-Year) | Anodized 25μm, Italian Heat-Transfer Wood Grain Finish |
| Hardware & Locksets | German Siegenia / Hoppe / GU Multi-Point Security System | Motorized Smart Biometric Access Control & Intercom Hookup |
| Sealing Gaskets | Triple-sealed EPDM Continuous Vulcanized Weatherstripping | Silicone Coated Weather Seals for Sub-Zero Freeze Protection |
OEM Engineering Note: All custom aluminum double door extrusions undergo finite element analysis (FEA) to ensure structure deflection limits do not exceed L/175 or L/240 under ultimate wind load conditions according to regional structural design mandates.
Localization Support & International Compliance
Ensuring effortless import approvals, building code compliance, and structural certification across major international markets.
North America (NFRC & Florida NOA)
Extrusions and glazing options engineered to pass NFRC thermal metrics, CSA standards, and high-velocity hurricane zone (HVHZ) impact testing required for Florida NOA compliance.
Australia & New Zealand (AS2047 / AS1288)
Full adherence to Australian Standards AS2047 (Windows and External Doors in Buildings) and AS1288 (Glass in Buildings), including rigorous water penetration pressure verification up to 450Pa.
European Union (CE & EN Standards)
Compliance with EN 14351-1 harmonized standards for external pedestrian doorsets, guaranteeing CE mark conformity, air permeability EN 12207 Class 4, and acoustic isolation up to 45dB.
35-Inspector Quality Assurance Protocol
To eliminate field failures, Zenit maintains a rigorous 4-stage inspection workflow:
- Raw Extrusion & Powder Inspection: Spectrometric alloy testing and coating thickness checks (minimum 60μm for powder coat; 25μm for anodizing).
- Pre-Assembly CNC Tolerance Audits: Digital caliper validation of hinge cutouts, lock slots, and miter angles within ±0.1mm tolerance.
- Structural & Thermal Chamber Testing: Dynamic air infiltration, positive/negative wind load deflection, and cyclic water spray tests.
- Pre-Shipment Debugging: Operational torque tests on handles, smooth latch engagement checks, and 100% protective film application.
Technological Roadmap & Future Architectural Outlook
Pioneering the next generation of eco-friendly, ultra-insulated, and IoT-integrated entrance solutions.
Vacuum Insulated Glass (VIG) Integration
Elimination of thick triple-pane units by leveraging 8mm thin Vacuum Insulated Glass panels, delivering sub-0.5 U-values while significantly reducing overall sash weight and frame profile mass.
Low-Carbon Recycled Extrusions
Transitioning primary extrusion sourcing toward 75%+ post-consumer recycled aluminum, dramatically reducing embodied carbon metrics to meet stringent green building LEED v4.1 criteria.
BIM & Digital Twin CAD Libraries
Providing architects and procurement teams with fully parametric BIM (Revit/ArchiCAD) objects, enabling immediate integration into building energy simulations and structural modeling software.
Comprehensive Door & Window Systems
Discover our specialized range of bi-fold doors, skylights, sun louvers, and high-impact custom windows.
OUNA Aluminum Bi Fold Window Equipped with Double Tempered Low E Glass and Argon Gas Fill for Safety and Energy Efficiency
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OUNA Modern Design Smart Vertical Automatic Sliding Windows Tempered Glass Aluminum Glass Electric Lift up Window for Houses
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OUNA Aluminum Sliding Door Double Glazed Tempered Glass Balcony Patio Sliding Door Hurricane Impact Sliding Patio Doors
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OUNA Hurricane Impact Proof Soundproof NOA NFRC CSA Aluminum Casement Window Double Tempered Glass with Screen Thermal Break
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OUNA AS2047 Modern Villa Restaurant Thermal Break Aluminium Double Tempered Glazed Bifold Sliding Accordion Folding Door
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OUNA Fixed Exterior Aluminum Sun Louver System Custom Spacing and Angle to Block Direct Sunlight and Reduce Glare
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OUNA Commercial Project Aluminum Skylight Extra Large Size and High Load Capacity Custom Design with Robust Motorized System
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OUNA NFRC American Aluminium Folding Doors Price Thermal Break Glass Bifold Door Exterior Patio Accordion Doors
View Product SpecsFrequently Asked Questions (B2B Sourcing FAQ)
Clear engineering answers regarding customized OEM manufacturing, minimum order quantities, compliance certifications, and freight handling.
What is the typical lead time for custom OEM aluminum double door production?
Standard OEM manufacturing lead time is approximately 25 to 35 business days from CAD drawing approval and deposit receipt. For complex custom extrusion dies, add 10 to 14 days for initial tooling creation and sample extrusion verification.
How does Zenit ensure thermal break structural integrity in extreme hot or cold zones?
We utilize high-density PA66 GF25 (25% glass fiber reinforced polyamide) thermal strips imported to guarantee matching thermal expansion coefficients with aluminum. This prevents shear delamination across seasonal temperature variations from -40°C to +80°C.
What minimum order quantities (MOQ) apply to wholesale building project orders?
Our standard MOQ starts at 50 square meters for stock extrusion profiles and standard powder colors. For fully customized extrusion dies or proprietary hardware integrations, our project engineers will negotiate flexible MOQs based on total contract value.
What export packaging protection is used to prevent ocean freight transit damage?
All door panels and frames undergo a 5-layer protective packing protocol: Protective surface film, EPDM corner guards, bubble wrap, fully enclosed fumigated plywood crates, and steel strap container anchoring.