Directly integrated from our 180,000 m² Foshan intelligent fabrication center. Certified for international building codes.
The shift from perimeter-framed fenestration to heavy structural frameless glass entry systems represents a fundamental evolution in architectural engineering across North America, Europe, Australia, and the Middle East.
Modern flagship commercial spaces and high-end residential estates increasingly require sightline-free transitions. Structural frameless glass doors eliminate heavy vertical stiles, shifting all mechanical loads directly to top and bottom shoe channels or heavy-duty floor pivot assemblies.
With updates to ASHRAE 90.1, IECC, and California Title 24, frameless entry assemblies can no longer rely on single-pane monolithic glass. Global procurement mandates low-emissivity (Low-E), argon gas-filled, laminated structural double-glazed units featuring warm-edge spacers.
Coastal developments require hurricane-resistant entry solutions certified under TAS 201/202/203 and ASTM E1996. DERCHI structural frameless glass assemblies incorporate DuPont SentryGlas (SGP) interlayers to withstand wind speeds exceeding 250 km/h.
Designing a frameless glass entry door requires rigorous calculations of shear strain, glass edge stress, and mechanical hinge moment forces. Here is how DERCHI standardizes OEM manufacturing.
Unlike traditional aluminum-framed doors where the frame bears 100% of torsional shear, a frameless glass entry leaf functions as a load-bearing panel. Glass thickness calculation relies on effective laminate thickness principles under ASTM E1300 standards.
Where: h_ef = Effective laminate thickness for deflection; Γ = Interlayer transfer coefficient (SGP vs PVB); d = Distance between glass centroid lines.
Comparing structural configurations for high-traffic commercial vs luxury residential applications
| Specification Parameter | Monolithic Tempered Heavy Glass | Structural SGP Laminated Glass | Double-Glazed Insulating Frameless |
|---|---|---|---|
| Glass Thickness Range | 10mm / 12mm / 15mm / 19mm | 12.76mm to 25.52mm SGP | 28mm (6mm + 16Ar + 6mm) to 42mm |
| Interlayer Polymer | N/A (Single Monolithic) | 1.52mm SGP (SentryGlas) | 0.89mm / 1.52mm PVB or SGP |
| Maximum Leaf Dimension | 1500 x 3000 mm | 2000 x 4000 mm (Oversized) | 1600 x 3200 mm |
| Thermal Transmittance (U-Value) | ~5.6 W/(m²·K) | ~5.2 W/(m²·K) | 1.4 – 1.8 W/(m²·K) (Low-E + Argon) |
| Sound Transmission Class (STC) | 31 - 33 dB | 38 - 42 dB | 40 - 45 dB |
| Hardware Integration | Patch Fittings / Top-Bottom Shoe | Heavy-Duty Floor Pivot (500kg) | Concealed Hydraulic Offset Pivot Shoe |
| Wind Pressure Resistance | Up to 2.4 kPa | Up to 4.5 kPa (Cyclone Rated) | Up to 3.2 kPa |
Frameless doors expose 100% of glass edges. DERCHI uses 5-axis bilateral CNC grinding machines to achieve Flat Edge with Arris finish (tolerance ±0.1mm), eliminating micro-cracks that cause spontaneous thermal breakage.
To eliminate spontaneous fracture caused by Nickel Sulfide (NiS) inclusions, all DERCHI tempered glass panels undergo Heat Soak Testing in accordance with EN 14179-1, ensuring 99.9% reliability on job sites.
Equipped with German dormakaba / Dorma-type floor pivot springs rated for 500,000 cycles, featuring backcheck valves, dual-stage closing speed regulation, and ±5mm alignment adjustment in all directions.
DERCHI operates a 180,000 m² integrated production base with over 600 skilled technicians, delivering fully customized fenestration packages for architects, general contractors, and trade distributors.
Our in-house design engineering department generates full CAD fabrication drawings, structural calculations, and Revit BIM models within 48 hours of schedule receipt, ensuring seamless integration with master facade plans.
Every frameless door undergoes 5 inline QC inspections: float glass raw sheet optical scan, CNC dimension check, tempering strain pattern analysis, hardware mock-up dry assembly, and final seal integrity verification.
Export packaging features EPE foam edge protectors, vacuum moisture barrier wrapping, and heavy-duty steel-reinforced fumigation-free plywood crates labeled by door opening tag number, reducing freight damage to < 0.2%.
DERCHI R&D is driving the convergence of smart building controls, extreme thermal barriers, and active structural safety into next-generation frameless glass entry systems.
Integrating Polymer Dispersed Liquid Crystal (PDLC) smart film directly inside laminated frameless glass panels allows instant opacity control via smart home systems, biometric entry triggers, or building management protocols (BMS).
By replacing traditional argon gas gaps with a 0.1mm micro-pillar vacuum chamber, future DERCHI frameless glass doors will achieve thermal insulation values of U ≤ 0.60 W/(m²·K) at a total thickness of under 15mm.
Replacing mechanical latch cutouts with top/bottom electromagnetic drop-bolts controlled by facial recognition, RFID, or smartphone Bluetooth, eliminating structural stress points around lock notches.
Navigating municipal building codes requires complete test evidence. DERCHI doors arrive with accredited laboratory reports tailored to your project jurisdiction.
ASTM E1300 (Structural glass design), ASTM E330 (Structural performance), NFRC 100/200 (Thermal rating & SHGC), and ANSI Z97.1 / CPSC 16 CFR 1201 impact safety compliance.
Full compliance with AS 1288 (Glass in buildings - Selection & installation) and AS2047 / AS 2208 safety glazing certifications, verified for wind pressure ratings up to N6 / Cyclonic.
EN 12150-1 (Thermally toughened safety glass), EN 14449 (Laminated safety glass), and CE Marking under EN 14351-1 fenestration directives for EU member states.
Using SGP laminated toughened glass formulations, DERCHI manufactures single glass pivot leaves up to 2000 mm in width by 4000 mm in height. Weight capacity for our heavy-duty hydraulic floor pivots reaches up to 500 kg per leaf, incorporating reinforced structural stainless steel shoe channels.
SentryGlas (SGP) interlayers are 100 times stiffer and 5 times stronger than standard PVB films. In frameless applications, SGP maintains structural rigidity even if glass breaks, staying upright under wind load. Furthermore, SGP exhibits near-zero moisture yellowing, making it essential for exposed exterior entrances.
Frameless glass doors utilize ultra-clear translucent polycarbonate bulb gaskets or magnetic interlocking silicone seals fitted along vertical glass edges. Bottom door shoes integrate heavy-duty drop-down acoustic weather sweeps combined with concealed threshold drainage channels.
Sample prototype doors require 12 to 18 days. Bulk project orders average 25 to 35 calendar days following CAD shop drawing approval. For project-specific OEM orders, DERCHI does not enforce a rigid container MOQ—single custom sample doors are supported for project bidding and showroom testing.
Yes. We regularly supply OEM assemblies pre-drilled for concealed wire raceways, electric strikes, motorized floor pivots, magnetic locksets, and integrated PDLC switchable smart glass transformers calibrated for global voltages (110V-240V).
Complementary architectural fenestration solutions tested to matching engineering standards.
