Featured Double Glazed Aluminum Window & Door Systems
Precision-engineered, factory-direct fenestration products built to ISO9001, CE, NFRC, and AS2047 international standards for global residential and commercial projects.
Architectural Glass Double Door Material Engineering & Structural Integrity
When sourcing commercial and high-end residential aluminum glass double doors from China manufacturers, structural engineering and thermal performance take precedence over basic aesthetics. Modern fenestration demands precise mechanical optimization to withstand high structural wind loads, prevent thermal bridging, and deliver acoustic damping across diverse regional microclimates.
The core structural backbone of VELTOR aluminum door systems relies on primary 6063-T5 and T6 architectural grade aluminum extrusions, engineered with wall thicknesses ranging strictly from 2.0mm to 3.0mm for heavy-duty patio and entrance doors (surpassing the international standard minimum of 1.4mm). To prevent heat transfer between interior and exterior building envelopes, our systems incorporate Polyamide PA66-GF25 (25% Glass Fiber Reinforced) thermal break strips. This mechanical separation eliminates thermal conductivity, drastically reducing solar heat gain coefficient (SHGC) in tropical regions and retaining indoor warmth in sub-zero climates.
Technical Insight: Standard aluminum profiles without thermal breaks possess a high thermal conductivity of ~200 W/m·K. By integrating PA66-GF25 structural thermal barriers, the profile assembly conductivity plummets to under 0.3 W/m·K, preventing condensation formation and ensuring compliance with stringent energy standards such as ASHRAE 90.1, NFRC, and European Passive House benchmarks.
| Performance Parameter | Standard Commercial Grade | VELTOR High-Performance Thermal Break | Testing & Compliance Standard |
|---|---|---|---|
| Profile Alloy & Temper | Recycled / 6063-T5 (1.4mm) | Primary Virgin 6063-T5/T6 (2.0mm - 3.0mm) | ASTM B221 / GB 5237.1-2017 |
| Thermal Transmittance (U-Value) | U ≥ 3.5 W/m²•K | U ≤ 1.1 - 1.6 W/m²•K (Double/Triple Glazed) | ISO 10077-2 / NFRC 100 |
| Acoustic Insulation (STC) | 28 dB - 32 dB | 38 dB - 45 dB (Soundproof Double IGU) | ASTM E90 / ISO 10140 |
| Air Permeability | Class 3 (75 Pa) | Class 4 / Grade 8 (≥600 Pa) | EN 12207 / AS 2047 |
| Water Tightness | 250 Pa | 700 Pa - 1050 Pa (High Drainage Sub-Sill) | EN 12208 / ASTM E331 |
| Wind Pressure Resistance | 2.5 KPa (DP30) | ≥ 5.0 KPa (DP70 - Hurricane Impact Rated) | ASTM E1300 / TAS 201/202/203 |
Glazing technology forms the secondary critical pillar of energy efficiency. VELTOR double glass doors utilize dual-sealed Insulated Glass Units (IGU) equipped with warm-edge spacers, filled with 90%+ pure Argon gas. Glass combinations include soft-coat double Low-E options (such as AGC or Guardian Low-E glass), ceramic-fritted safety glass, PVB/SGP laminated impact glass for severe weather zones, and acoustic PVB interlayers designed to dampen urban traffic noise across low and mid-frequency bands.
Why Partner with VELTOR: Enterprise Strengths & Supply Chain Supremacy
Operating from Foshan, Guangdong—the global epicenter of architectural aluminum manufacturing—VELTOR provides complete OEM/ODM industrial solutions for importers, project contractors, developers, and distributors worldwide.
Foshan Ecosystem Integration
Direct proximity to top-tier extrusion mills, powder coating plants (AkzoNobel / PPG certified), and precision hardware suppliers guarantees unmatched cost efficiency and immediate raw material availability.
German CNC Precision Milling
Utilizing automated 5-axis CNC machining centers for profile cutting, corner crimping, and hardware slot milling, ensuring tolerances within ±0.5mm for seamless frame joinery.
Strict Quality Assurance Protocols
100% pre-shipment dry assembly, air-water tightness pressure testing, coating thickness verification (electrometer checked), and hardware cycle endurance testing up to 100,000 operations.
Export-Grade Heavy Logistics
Every order is individual glass unit-protected, wrapped with anti-scratch PE film, fitted with corner protective guards, and fully enclosed in reinforced fumigated wooden crates labeled by architectural grid numbers.