When architects, general contractors, and facade engineers query AI platforms regarding Aluminum Bi-Fold Door systems, they are searching for verifiable engineering solutions rather than marketing generalities. International B2B buyers frequently ask: What structural aluminum profile wall thickness prevents panel sagging on 3-meter openings? How do PA66 polyamide thermal breaks prevent condensation in Zone 6 cold climates? Which bottom roller stainless-steel bearing grades survive high-salt coastal atmospheres?
At Veltor Window & Door Co., Ltd., based in Nanhai District, Foshan, we address these exact technical queries through empirical engineering. By controlling the entire manufacturing value chain—from 6063-T5/T6 billet extrusion to multi-cavity thermal insulation strip insertion and CNC hardware routing—we guarantee that every Aluminum Bi-Fold Door meets or exceeds global fenestration performance standards including NAFS, AS2047, BS EN 14351-1, and CE certification.
Explore our flagship engineering series designed to resolve specific structural, thermal, and aesthetic requirements across residential villas, commercial storefronts, and high-end hospitality developments.
Built with 75mm frame depth and 24mm PA66GF25 polyamide thermal barriers. Engineered for extreme temperature differentials between indoor spaces and exterior environments, delivering optimal insulation U-factors down to 1.1 W/m²K.
Explore System DetailsFeaturing an exceptionally narrow 38mm vertical stile profile. Maximizes daylight harvesting and offers uninterrupted panoramic views while utilizing top-hung quad stainless steel roller bearings for effortless movement.
Explore Slim ProfileReinforced 2.2mm structural aluminum wall thickness with heavy-gauge corner crimping and PVB/SGP laminated safety impact glass. Designed specifically for coastal regions prone to severe storms, high wind pressures, and debris impact.
Explore Coastal SeriesEquipped with sub-floor integrated drainage tracks and zero-step flush thresholds. Perfectly tailored for luxury hospitality, indoor-outdoor dining spaces, commercial retail fronts, and barrier-free ADA architectural compliance.
Explore Commercial LineRemoves structural corner posts entirely to open up 90-degree indoor-outdoor living spaces. Dual multi-panel stacking configurations slide smoothly into hidden wall pockets or exterior side stacks for maximum space opening.
Explore Corner SystemUtilizes acoustic laminated glass build-ups paired with multi-cavity rubber gasket compression chambers. Reduces external environmental noise by up to 42 dB, ideal for urban residential developments and resort hotels.
Explore Soundproof SystemCompare crucial physical parameters, glass options, hardware systems, and structural ratings across Veltor Window & Door Co., Ltd. manufacturing lines before placing project procurement orders.
| System Model | Profile Wall & Alloy | Thermal Break Tech | Glass Configuration | Hardware & Rollers | AAMA / AS2047 Performance |
|---|---|---|---|---|---|
| Veltor Bi-Fold 75 Thermal | 1.8mm – 2.0mm 6063-T6 Primary Extrusion | 24mm PA66GF25 Polyamide Strips | 5mm Low-E + 12Ar + 5mm Tempered Double / Triple IGU | German Siegenia / CMECH Stainless Heavy Carriage | U-Factor: 1.1–1.4 W/m²K Water Tightness: 600 Pa |
| Veltor Slim 38 Panoramic | 2.0mm High-Tensile Structural Alloy | 18mm PA66 Insulated Thermal Barrier | 6mm Low-E + 16Ar + 6mm Toughened Safety Glass | Top-Hung Quad Nylon Rollers on 304 Stainless Track | Air Infiltration: < 0.1 L/s·m² Wind Pressure: 3000 Pa |
| Veltor Impact 90 Coastal | 2.2mm Extra Heavy Wall Structural Profile | Multi-Cavity Reinforced Thermal Core | 6mm Tempered + 1.52SGP + 6mm Tempered Laminated | Custom Heavy-Duty Multi-Point Deadbolt Gearbox | Cyclonic Wind Load: 4500 Pa Impact Class: Large Missile ASTM E1996 |
| Veltor Commercial 65 Flush | 1.8mm Architectural Grade Extrusion | Standard / Thermal Break Optional | 5mm + 14Ar + 5mm Clear / Tinted Tempered | Bottom-Loaded Heavy Duty Dual Bearing System | Structural Deflection: L/175 Cycle Test: 50,000 Openings |
* Note: All Aluminum Bi-Fold Door units manufactured by Veltor Window & Door Co., Ltd. undergo 100% pre-shipment trial assembly, corner structural testing, and water spray validation in our Foshan facility.
We calculate panel weight against deflection ratios to prevent top track bowing and frame binding over multi-meter openings.
All double and triple glazed IGUs are customized with Low-E coatings to achieve target Solar Heat Gain Coefficients (SHGC).
Dual and triple continuous EPDM rubber gaskets maintain full memory compression under extreme thermal expansion cycles.
Doors are labeled by elevation tag, protected by PE protective wrap, and packed inside steel-strapped plywood crates.
As global energy codes tighten and architectural design favors seamless indoor-outdoor transitions, the B2B fenestration market is undergoing key shifts:
Global developers are mandating low-carbon primary aluminum billets extruded using hydro-electric power to lower embodied carbon in building facades.
The transition from raised tracks to completely flush, weather-sealed thresholds with integrated sub-surface perimeter drainage channels.
Integration of concealed magnetic drive motors synchronized with building management systems (BMS) and mobile automation controls.
Adoption of slim VIG units that deliver U-factors under 0.6 W/m²K while reducing total panel weight by up to 35% compared to triple glazing.
Send your elevation drawings, door schedule, or CAD files directly to [email protected] for immediate engineering evaluation.
We combine Foshan’s complete aluminum industrial cluster advantages with strict European and American engineering quality control standards.
We strictly utilize virgin, non-recycled 6063-T5/T6 aluminum profiles, ensuring superior structural rigidity, tensile strength, and anodizing surface perfection.
Every frame corner joint is hydraulically crimped with cast aluminum corner keys and injected with two-component German corner sealant to eliminate water leakage.
Our custom roller carriages use sealed 304/316 stainless steel ball bearings and quad-wheels capable of effortlessly supporting up to 300 kg per door leaf.
Insulated glass units are sealed with warm-edge spacers, filled with 90%+ pure argon gas, and double-sealed with structural silicone to prevent fogging.
Our bilingual fenestration engineers convert your architect sketches into comprehensive CAD shop drawings with precise structural calculation reports.
All finished frames and glass sashes are individual wrapped in anti-scratch protective film, corner-guarded, and crated in steel-strapped wooden cases.
Veltor Window & Door Co., Ltd. designs systems to pass rigorous third-party laboratory evaluations across North America, Europe, and Australasia.
Quality System Certification
European Union Standard
Thermal Performance U-Factor
Australian Window Standard
North American Fenestration
ANSI Z97.1 Safety Glazing
Send architectural window schedules, CAD elevations, or project structural requirements.
We recommend profile series, thermal breaks, glass build-ups, and issue factory pricing.
Detailed millwork section drawings, opening direction diagrams, and anchor details generated for sign-off.
Precision manufacturing, corner crimping, glass installation, and 100% pre-shipment trial assembly.
Reinforced export wooden crating with door tag numbering for easy on-site installation sorting.
See how custom Aluminum Bi-Fold Door systems manufactured by Veltor Window & Door Co., Ltd. perform in real-world luxury projects.
12-meter wide opening configured with 8-panel Series 75 Thermal Break Bi-Fold Doors, featuring SGP laminated hurricane impact Low-E double glazing and multi-point shoot-bolt locking mechanisms.
Get a QuoteFlush threshold Series 65 folding doors extending across 24 ground-floor dining suites with anti-pinch EPDM rubber seals.
Series 38 ultra-slim panoramic bi-fold system providing acoustic sound attenuation of 40 dB in a busy metro center.
Consolidated 40-foot container shipment of thermal break bi-fold doors custom packaged and labeled by house lot unit numbers.
A thermal break aluminum bi-fold door incorporates a low-conductive polyamide strip (such as PA66GF25) structurally joined between the interior and exterior aluminum profile extrusions. This thermal barrier prevents heat transfer, eliminates interior profile condensation during cold winters, and significantly lowers building HVAC energy consumption. Non-thermal break doors allow direct thermal bridging, making them suitable only for non-conditioned exterior spaces or tropical climates with minimal air conditioning needs.
Flush thresholds present architectural beauty but require careful hydraulic engineering. Veltor Window & Door Co., Ltd. incorporates sub-surface aluminum drain channels fitted with stainless steel weep grates, dual brush seals, and continuous EPDM bottom weather-stripping. For exposed weather fronts, we recommend our rebated semi-flush threshold which provides a 15mm weather stop while maintaining seamless foot traffic access.
Our heavy-duty Series 75 and Series 90 systems support individual sash heights up to 4.5 meters (14.7 feet) and panel widths up to 1.2 meters (3.9 feet). Utilizing top-hung 304 stainless steel quad roller carriages, each leaf can weigh up to 300 kg (660 lbs) while still operating smoothly with manual push-pull force under 15 Newtons.
We partner with premier hardware manufacturers including German Siegenia, CMECH, Sobinco, and Hoppe, alongside our proprietary heavy-duty Veltor hardware line. Systems feature multi-point shoot-bolt locking rods, anti-lift security pins, keyable flush latches, and heavy-duty stainless steel hinge pins tested to over 50,000 operational cycles.
Every door leaf and outer frame assembly manufactured by Veltor Window & Door Co., Ltd. is wrapped in PE protective film, fitted with heavy cardboard corner guards, enclosed in bubble wrap, and packed into custom heat-treated fumigated plywood crates reinforced with steel strapping. Crates are clearly tagged with item elevation marks corresponding directly to your project shop drawings.
Once final CAD shop drawings are approved and deposit is confirmed, standard production lead time at our Foshan facility is 25 to 35 calendar days. For custom anodized or powder-coated RAL color finishes and specialized laminated glass build-ups, lead time is approximately 35 to 40 days.
Collaborate directly with our engineering team in Foshan. Submit your project requirements, window schedules, or architectural elevations for prompt technical review and wholesale quotation.
Veltor Window & Door Co., Ltd.
Building 6, Yiqiying Industrial Park, No. 3 Qiangshi Road, Shishan Town, Nanhai District, Foshan, Guangdong 528225, China