Precision-engineered impact-resistant, thermally broken, and commercial escape systems rigorously tested for structural integrity and thermal envelope efficiency.
Grandex Door Solutions Co., Ltd. combines advanced European engineering design with automated Industry 4.0 production capabilities for high-volume architectural exports.
Established in 2014, Grandex Door Solutions Co., Ltd. is a premier entry door manufacturer operating from a modern 35,000 m² facility. With 16 years of industry expertise and 8 years of dedicated export experience, the company generates an annual export revenue of USD 28 million. Grounded in strong OEM and ODM trade backgrounds, our products primarily serve North America and Western Europe, supported by a network of over 1,200 supply chain partners. We cater to leading building material distributors, real estate developers, and commercial contractors. Quality is integral to our operations: supported by strict ISO 9001 certified internal testing and third-party laboratory verification, our 45-member QA team ensures rigorous quality control throughout production. Driven by an active R&D division with 85 specialized engineers, we introduced 120 new door designs last year and offer full custom solutions spanning custom dimensions, security locks, surface finishes, and decorative glass panels.
Exploring kinematically balanced oversized entrances, high-load offset dynamic axes, and smart structural envelope thermal breaks.
Modern large-scale pivot doors demand sophisticated weight distribution. Factory-installed floor-recessed hydraulic pivot spindles allow panels weighing up to 1,000 kg (2,200 lbs) to rotate with minimal force (<15N). By utilizing self-closing dampening systems and 360-degree adjustable top pivots, custom pivot doors eliminate heavy frame stress and avoid sagging over extended operational cycles.
Traditional oversized doors historically suffered from thermal bridging and perimeter air leakage. Our CE-marked pivot systems integrate multi-chamber PA66-GF25 glass-fiber reinforced polyamide thermal barriers. Combined with active perimeter drop seals, magnetic acoustic gaskets, and dynamic brush seals, our pivot systems achieve thermal transmittance values (U-factor) as low as 0.85 W/m²K.
Future-proofed architectural designs incorporate concealed electro-mechanical multi-point locking hardware. Compatible with home automation systems, biometrics (fingerprint/facial recognition), smart keycards, and motor-driven automated pivot actuators, our custom pivot doors deliver seamless security without compromising minimalist aesthetic lines.
| Performance Metric | Standard Structural Glass Pivot | Thermally Broken Impact Pivot | Factory Test / Certification Standard |
|---|---|---|---|
| Max Panel Dimensions | Up to 3,000mm (W) x 6,000mm (H) | Up to 2,500mm (W) x 4,500mm (H) | Custom Engineering Verification |
| Structural Load Bearing Capacity | 500 kg Standard Pivot Axis | 1,000+ kg Heavy-Duty Hydraulic Spindle | EN 1191 / ASTM E330 |
| Thermal Transmittance (U-Value) | 1.8 - 2.2 W/m²K | 0.85 - 1.2 W/m²K | ISO 10077-2 / NFRC 100 |
| Wind Pressure Resistance | Class 4 (1600 Pa) | Class E3000 (3000+ Pa / Miami-Dade NOA) | EN 12210 / TAS 202 |
| Acoustic Isolation Rating | 32 dB STC | 42 - 47 dB Soundproof Double/Triple Glaze | ISO 717-1 / ASTM E90 |
From ultra-luxury residential mansions to high-traffic commercial complexes, tailored entrance engineered solutions fulfill strict regional building codes.
For high-end villas and custom residential architectural builds, entrance aesthetics demand imposing scale. Our custom pivot doors support ultra-clear Low-Iron tempered glass, real timber surface cladding overlays, anodized metallic patinas, and continuous floor-to-ceiling glass profiles that seamlessly blur the line between indoor and outdoor living spaces.
Hotels, flagship corporate headquarters, and civic buildings require hardware engineered for millions of continuous open/close cycles. We supply heavy-duty commercial pivot systems equipped with integrated panic exit hardware, automatic floor-closer speed controls, electromagnetic hold-open devices, and full compliance with international ADA accessibility standards.
Coastal constructions facing severe hurricane threats require maximum structural resistance. Utilizing multi-layer DuPont SentryGlas (SGP) laminated glass interlayers and heavy-gauge structural aluminum profiles, our Florida NOA and Miami-Dade certified door systems withstand cyclic wind pressure and large missile impact testing (TAS 201/203).
Step inside Grandex's 35,000 m² state-of-the-art intelligent production line. Real-time ERP tracking, automated 5-axis CNC machining, and rigorous 45-point QA checks ensure flawless precision.
Navigating international fenestration certifications, structural calculations, and supply chain logistics for enterprise procurement teams.
Essential for Western European markets, our CE-certified pivot assemblies comply with EN 14351-1 directives governing external pedestrian doorsets. Testing encompasses air permeability (EN 12207), watertightness (EN 12208), resistance to wind load (EN 12210), and operating forces (EN 12217).
For distributors and general contractors operating across North America, Grandex products provide validated NFRC U-factor & SHGC thermal ratings, as well as Florida Building Code Notice of Acceptance (NOA) for coastal high-velocity hurricane zones (HVHZ).
We support building material distributors and system houses with complete OEM/ODM white-label engineering. From custom extrusion profile die tooling to bespoke packaging, structural BIM models, and localized warranty documentation, we streamline enterprise importing.
Technical clarity on structural capabilities, installation tolerances, thermal performance, and global compliance for specifiers and engineers.
Unlike butt-hinged doors that transfer panel deadweight directly to the side jambs and vertical studs, custom pivot doors transfer structural loads downward into the floor slab via top and bottom pivot axes. This allows pivot systems to support vastly larger and heavier panels (up to 1,000kg) while keeping frame deflection near zero and enabling ultra-narrow sightline frames.
We mitigate wind-driven water penetration through dynamic, multi-barrier perimeter seal systems. These include drop-down dynamic bottom seals that engage automatically when closed, double-loop EPDM gasket channels, magnetic edge seals, and sub-floor concealed drainage channels that evacuate water even under extreme storm conditions.
Standard custom production lead time is 3 to 5 weeks from technical shop drawing approval, supported by our 35,000m² manufacturing hub. We provide 100% custom sizing, tailor-made extrusion dies, powder-coating or anodized surface finishes (Qualicoat certified), and full hardware integration (DORMA, FritsJurgens, or in-house custom hydraulic pivots).
Yes. Our hurricane-impact door series undergo Miami-Dade NOA and Florida Building Code testing (TAS 201/202/203). Utilizing structural aluminum alloys and laminated SentryGlas (SGP) interlayers, our doors resist large missile impacts and withstand high-cyclic wind pressures exceeding +3000 Pa.
Explore our full line of hurricane-proof sliding windows, bifold patio doors, commercial panic escape doors, and insulated architectural entry gates.
Grandex Door