Explore our core certified product line engineered for high-end residential, commercial, and extreme-weather applications.
Rigorous quality control, industrial automation, and deep international compliance validation for tier-1 building contractors.
Corporate Executive Summary: 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.
Understanding the convergence of structural resilience, urban density challenges, and energy efficiency mandates across international markets.
In North America, particularly coastal and hurricane-prone regions (such as Florida HVHZ zones), demand has pivoted heavily toward high-impact aluminum security doors. Regulatory bodies mandate rigorous adherence to NFRC U-factor benchmarks and ASTM E1300 structural load capacities. Modern OEM/ODM solutions must unify extreme forced-entry resistance with thermal break isolation to meet strict Title 24 and Energy Star standards without sacrificing structural rigidity.
Western European procurement emphasizes precise DIN EN 1627 RC2 to RC4 resistance classes alongside extreme airtightness for Passive House integration. European building codes demand U-values below 0.8 W/(m²K), requiring advanced multi-chamber polyamide thermal barriers (PA66 GF25). Dual-seal compression systems and hidden heavy-duty 3D adjustable hinges are essential requirements for luxury residential and financial institution projects.
Rapid urbanization in the Middle East and Asia-Pacific drives demand for corrosion-resistant aluminum extrusions capable of enduring extreme temperature fluctuations and high-salinity air. Powder coating treatments certified by Qualicoat Class 2 or Class 3, alongside integrated biometrics, smart locking mechanisms, and acoustic dampening (STC ratings over 42 dB), dominate high-end architectural procurement profiles.
An authoritative breakdown of structural alloys, mechanical locking geometry, thermal barrier integration, and glass unit dynamics.
Our entry security doors utilize high-grade 6063-T6 and 6005A-T6 aluminum extrusions engineered with specialized wall thicknesses ranging from 2.0mm to 3.0mm. Unlike standard residential door frames, our extrusion profiles incorporate internal webbed reinforcement bars, delivering yield strengths exceeding 240 MPa. This structural matrix provides extreme torque resistance, preventing frame warping under hydraulic pry attacks or severe physical impact.
To resolve the inherent thermal conductivity of aluminum, our doors integrate precision-engineered 24mm to 34mm PA66 GF25 (25% glass-fiber reinforced polyamide) thermal barriers. This separation eliminates thermal bridging, dramatically reducing heat transfer between interior and exterior environments. The result is lower HVAC operational costs, zero condensation buildup, and thermal insulation values certified to meeting low U-Factor standards.
Security starts with locking mechanics. Grandex doors deploy multi-point lock systems engineered with stainless steel hook deadbolts that anchor into the reinforced frame profile at 3 to 7 distinct points. For modern commercial and smart residential deployments, locksets seamlessly integrate electro-mechanical actuators compatible with 3D AI face recognition, biometric fingerprint sensors, encrypted RFID, and smart home IoT protocols.
Glazed security doors feature multi-layer tempered double or triple-pane insulated units (IGUs) laminated with structural SentryGlas® (SGP) or PVB interlayers. Available options include solar-control Low-E coatings, argon gas fills, and bullet-resistant glass configurations compliant with UL 752 standards. Glazing channels are sealed using EPDM gaskets, offering resistance to wind pressure, water penetration, and forced entry.
| Performance Parameter | Standard Specification | High-Security / Passive House Grade | Compliance Standards |
|---|---|---|---|
| Frame Alloy & Temper | Aluminum 6063-T5 (1.8mm - 2.0mm) | Structural 6063-T6 / 6005A-T6 (2.5mm - 3.2mm) | GB/T 5237, ASTM B221 |
| Thermal Insulation (U-Factor) | 1.8 - 2.2 W/(m²K) | 0.75 - 1.1 W/(m²K) | NFRC 100/200, ISO 10077 |
| Burglar Resistance Class | RC2 / PAS 24 Level 1 | RC3 - RC4 / High Forced Entry Rating | DIN EN 1627, BS EN 1627 |
| Acoustic Isolation (STC) | 32 dB - 36 dB | 42 dB - 48 dB (Acoustic Triple IGU) | ASTM E90, ISO 717-1 |
| Surface Finish Durability | Standard Powder Coating (60 µm) | Qualicoat Class 2 / PVDF 3-Coat (25+ Yrs) | AAMA 2604 / AAMA 2605 |
| Water Tightness / Air Leakage | Class 4A / Class 3 | Class 9A / Class 4 (600 Pa Pa pressure) | AS2047, EN 12207 / EN 12208 |
Inside Grandex’s 35,000 m² state-of-the-art facility: automated CNC processing, intelligent sorting, and rigorous multi-stage QA inspection.
Engineered-to-order aluminum door systems configured for specific environmental and operational demands.
For high-end residential estates, Grandex offers extra-large custom pivot and swing security doors featuring concealed hinges, custom timber or anodized aluminum facings, smart biometric entry, and thermal break cores. Designed to deliver architectural prestige alongside RC3-level intruder protection.
Automated sensor entrance doors engineered for high-traffic environments like shopping malls, hotels, and office towers. Featuring heavy-duty motorization systems, dual-glazing safety glass, energy-saving seals, and integrated fire emergency break-away mechanisms certified to Western European and US standards.
Specially designed for Northern North America and Nordic climates. Utilizing thick multi-cavity thermal break profiles, triple Low-E argon-filled glass units, and heavy EPDM weatherstripping to retain interior climate control down to sub-zero temperatures without frame frost formation.
Pioneering the next era of architectural security through digital convergence and sustainable manufacturing.
Grandex R&D is actively integrating next-gen spatial AI vision modules directly into aluminum door profiles. This technology enables touchless entry via multi-spectral 3D facial scanning and predictive behavioral analytics, offering real-time threat detection and integration with modern smart-city and home automation networks.
In line with global Net-Zero carbon targets, Grandex is expanding its supply chain to utilize low-carbon recycled aluminum billets (over 75% scrap content) processed with renewable hydropower energy. Coupled with eco-friendly VOC-free powder coatings, our products help developers earn LEED v4 and BREEAM sustainability credits.
Expert engineering answers for procurement managers, architects, and B2B buyers.
Select from our specialized line of hurricane-impact, thermal break, sliding, and smart entry systems.
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