Manufactured under strict ISO9001, CSA, CE, and AS2047 international standards in Foshan, China.
In modern architectural design, the request for minimalist elevation lines and seamless facade integration has driven the global adoption of aluminium flush windows. Unlike traditional overlap casement designs where the sash projects past the outer frame plane, a true flush aluminium window engineered by top Chinese factories maintains an absolutely flat, coplanar surface both internally and externally when closed.
From an engineering standpoint, achieving complete flush geometry requires precise extrusion tolerance control, advanced multi-chamber thermal breaks, and concealed hardware integration. As a leading manufacturer based in Foshan, China—the world's capital for premium architectural aluminium—our R&D focuses on solving structural deflection, water ingress, and acoustic bridging while keeping sightlines ultra-slim.
Utilizing high-density 6063-T5 / 6063-T6 architectural aluminium extrusions with wall thicknesses ranging from 1.6mm to 3.0mm, exceeding international ASTM and GB/T 5237 standards.
Integrated Technoform PA66-GF25 (25% glass fiber reinforced nylon) thermal break strips create a thermal boundary, keeping U-values as low as 0.8 to 1.2 W/m²K for Passive House projects.
Patented hidden pressure-equalized cascade drainage eliminates external plastic caps, preventing wind-driven rain penetration up to 700 Pa (PAS24 and AS2047 compliant).
| Performance Metrics | Standard Aluminium Casement | Vexis System Flush Window | High-Performance Ultra-Slim Flush |
|---|---|---|---|
| Frame-to-Sash Alignment | Stepped / Overlapped (8-12mm offset) | 100% Flush Coplanar Inside & Out | 100% Flush Coplanar + Concealed Hinge |
| Structural Profile Wall | 1.4mm - 1.6mm | 1.8mm - 2.2mm Heavy Duty | 2.0mm - 3.0mm Aircraft Grade 6063-T6 |
| Thermal Insulation (U-Value) | 2.4 - 3.0 W/m²K | 1.2 - 1.6 W/m²K | 0.8 - 1.1 W/m²K (Triple Glazed Low-E) |
| Acoustic Isolation (Rw) | 28 - 32 dB | 38 - 44 dB | 45 - 48 dB (Laminated Acoustic IGU) |
| Air Permeability | Class 4 (GB Standard) | Class 8 (Highest Global Tier) | Class 8 + Triple EPDM Gaskets |
| Hardware Integration | Surface Friction Stays | Concealed German Siegenia/G-U | Motorized Smart Actuators / Siegenia |
As international commercial property developers, facade contractors, and window importers look to optimize project budgets without compromising architectural integrity, China's aluminium window manufacturing sector has evolved from low-cost assembly to highly automated system engineering.
1. Shift Toward Fully Systemized Window Solutions: Procurement heads no longer buy raw extrusions and components separately. Importers favor turnkey "System Windows" engineered with factory-tested pressure chambers, calculated thermal breaks, and integrated multi-point hardware.
2. Extreme Weather & Hurricane Ratings: With increasing severe weather globally, demand for Florida Product Approval (FPA), CSA Hurricane Impact certifications, and Australian AS2047 compliance has surged. Leading Chinese factories integrate laminated tempered glass (e.g., 6mm+1.52PVB+6mm) into flush profile frames to withstand wind loads over 5000 Pa.
3. Advanced Surface Treatments for Coastal Longevity: Standard powder coating is being replaced by AkzoNobel and PPG Qualicoat Class 2 & Class 3 fluorocarbon (PVDF) finishes, along with hyper-durable Italian wood-grain vacuum transfer systems guaranteed against fading for 15 to 25 years in harsh marine environments.
Motorized flush sash openings integrated with rain sensors, smart building management systems (BMS), and concealed electric lock points.
Flush window frames designed to be embedded directly into plasterwork, rendering the outer aluminium frame completely invisible from the external building facade.
Windows engineered with factory-attached sub-frames, sub-sills, and nail fins suited for quick installation in North American timber frames or European masonry structures.
As a global direct-factory enterprise located in Lishui Town, Foshan, Guangdong, our 30,000 square meter production facility is dedicated to precision engineering, short lead times, and seamless international shipping logistics.
Strict Material Qualification: We exclusively source primary ingot A00 raw aluminium alloy. We strictly avoid recycled scrap aluminium to guarantee mechanical strength, structural elasticity, and flawless surface finish anodizing.
German-Standard Hardware Compatibility: Flush windows demand extreme alignment accuracy. Our systems are engineered to integrate seamlessly with top-tier hardware brands including Siegenia, Hoppe, Sobinco, G-U, and CMECH, ensuring smooth operating torque and over 100,000 cycle durability testing.
Factory Testing Laboratory: Prior to mass production dispatch, window batches undergo rigorous testing inside our factory test chamber for water spray penetration, air infiltration under negative/positive pressure, structural sash sagging, and corner weld shear stress strength.
Answers to critical technical, commercial, and logistics questions when sourcing flush aluminium windows directly from China factories.
A true flush aluminium window is designed so that the sash sits perfectly flush within the outer frame without any overlapping stepped lips. This creates a smooth, continuous glass and metal plane on both the interior and exterior sides. Achieving this requires custom multi-chamber profiles, concealed friction hinges, special EPDM compression seals, and precision corner crimping to maintain airtight performance.
Yes. Our window systems are tested and certified for major international building codes. We comply with NFRC and CSA standards for North America (including thermal U-factor and SHGC benchmarks) as well as AS2047 and AS1288 standards for Australia. Test reports and physical certificates are provided for project engineering approval submissions.
We provide fully customizable insulated glass units (IGU). Popular choices include double-pane tempered (6mm + 12Ar + 6mm Low-E), triple-pane passive house glass (5mm + 9Ar + 5mm + 9Ar + 5mm Low-E), laminated acoustic hurricane glass (6mm + 1.52PVB + 6mm), and warm-edge spacer glass filled with 90%+ Argon gas for thermal insulation.
We implement a 5-layer export protective packing standard: 1. Protective surface film on all exposed profile surfaces; 2. Thickened PE foam wrapping; 3. Heavy-duty corner protection guards; 4. Multi-layer corrugated cardboard wrap; 5. Fully sealed fumigation-free plywood crates with steel strap reinforcement suitable for FCL and LCL container sea transport.
Standard architectural powder coat finishes (Black, Anthracite Grey, White, Bronze) take 25 to 30 days after shop drawing confirmation. Custom RAL colors, PVDF fluorocarbon coatings, or specialized wood-grain transfers take 30 to 35 days. Fast-track production lines are available for urgent commercial projects.
Yes. As a primary factory, we support full custom OEM/ODM development. Our engineering team can extrude proprietary profile dies, design branded hardware caps, produce customized packaging, and co-develop unique window series tailored specifically for distributor sales networks.
Send us your architectural drawings, elevation schedules, or opening sizes. Our engineering team will provide free CAD shop drawings, U-value thermal calculations, and competitive factory-direct wholesale pricing within 24 hours.
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