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Product Highlights
1. What Is Bent Tempered Glass?
- Safety First: Upon breakage, it shatters into small, granular pieces—eliminating sharp shards
- Thermal Stability: Withstands extreme temperature variations
- Optical Clarity: Maintains visual quality with minimal distortion
- Structural Integrity: Engineered to withstand wind loads, impact, and thermal stress
2. The Manufacturing Process
| Stage | Description |
|---|---|
| Glass Cutting | Precision cutting of flat glass to specified dimensions |
| Edge Processing | Grinding and polishing of edges before bending |
| Hole Drilling / Notching | Cutouts, holes, and notches processed prior to tempering |
| Heating | Glass heated uniformly to 650–700°C in a tempering furnace |
| Bending | Glass shaped over a custom steel mold or between bending rollers |
| Quenching | Rapid cooling with high-pressure air jets to create surface compression |
| Inspection | Optical quality, radius accuracy, and tempering integrity testing |
Bending Types & Capabilities
| Bending Type | Description | Typical Applications |
|---|---|---|
| Cylindrical Bending | Single-axis curvature—uniform radius across the panel | Curtain walls, display cases, shower enclosures |
| Conical Bending | Variable radius—tapered curve | Architectural features, escalator glazing |
| Compound Bending | Double curvature—complex shapes | Automotive windshields, specialty architectural elements |
| S-Shaped / Sinusoidal | Reverse curves—multiple bends in one panel | Staircase railings, feature walls |
| Spherical / Dome | Multidirectional curvature | Skylights, domes, conservatories |
| Sharp Bends / Tight Radius | Extremely small radius (down to 500mm) | Retail displays, furniture, showcases |
Radius Guidelines by Thickness
| Glass Thickness (mm) | Minimum Cylindrical Radius (mm) | Recommended Radius (mm) |
|---|---|---|
| 3 – 4mm | 500 | 600 – 800 |
| 5 – 6mm | 600 | 800 – 1200 |
| 8 – 10mm | 800 | 1200 – 1800 |
| 12mm | 1000 | 1500 – 2500 |
| 15mm | 1500 | 2000 – 3000 |
| 19mm | 2000 | 2500 – 4000 |
Glass Options for Bent Tempered Glass
| Glass Type | Characteristics | Best Applications |
|---|---|---|
| Clear Float | Standard clarity, slight green tint | General architectural, cost-effective |
| Ultra-Clear Low-Iron | Crystal-clear, no green tint | High-end retail, luxury residences, display cases |
| Tinted Glass | Bronze, gray, blue, green, black | Solar control, aesthetic facades |
| Low-E Coated | Energy-efficient, thermal insulation | Curved curtain walls, energy-saving applications |
| Reflective Coated | Mirror-like appearance, solar control | Iconic architectural features |
| Frosted / Acid-Etched | Privacy with light diffusion | Bathrooms, partitions, decorative features |
| Laminated Bent Glass | PVB or SGP interlayer for safety and security | Staircases, railings, overhead glazing |
| Patterned / Textured | Decorative surface patterns | Interior design, privacy glazing |
| Silk-Screen Printed | Custom ceramic frit patterns | Bird-safe glazing, spandrel panels, branding |
Laminated Bent Tempered Glass
| Feature | Description |
|---|---|
| Construction | Two or more layers of bent tempered glass bonded with PVB, SGP, or EVA interlayer |
| Interlayer Options | Standard PVB / Acoustic PVB / SGP / Colored PVB |
| Benefits | Post-breakage integrity, 99% UV protection, enhanced acoustic insulation, forced entry resistance |
| Applications | Curved balustrades, staircases, skylights, high-security glazing |
Customization Options
| Category | Options |
|---|---|
| Shape | Cylindrical, conical, compound, S-shaped, spherical, custom freeform |
| Dimensions | Any length, height, and radius combination |
| Thickness | 3mm – 19mm (tempered) / up to 25mm (heat-strengthened) |
| Edge Finish | Flat polish, seamed, beveled, pencil edge |
| Holes & Cutouts | Precision-drilled holes, notches, slots, custom cutouts |
| Surface Treatment | Sandblasting, acid-etching, silk-screen printing, ceramic frit |
| Coating | Low-E, reflective, anti-reflective, self-cleaning |
| Lamination | PVB, acoustic PVB, SGP, colored interlayers |
| Hardware Integration | Custom brackets, clamps, fittings, hinges |
Applications
| Sector | Common Uses |
|---|---|
| Architectural Facades | Curved curtain walls, entrance canopies, feature glazing |
| Interior Design | Curved partitions, feature walls, reception desks, display cases |
| Staircases & Railings | Curved glass balustrades, spiral staircase glazing, handrails |
| Skylights & Canopies | Barrel vaults, domed skylights, curved canopies |
| Shower Enclosures | Curved frameless shower screens, steam rooms |
| Retail & Display | Curved display cases, museum exhibits, luxury showcases |
| Automotive & Transport | Windshields, sunroofs, bus shelters, train windows |
| Furniture | Curved tabletops, shelving, cabinet doors |
| Pool & Spa | Curved pool fencing, spa enclosures |
Performance Characteristics
| Property | Value |
|---|---|
| Strength | 5–7x stronger than annealed glass of same thickness |
| Thermal Shock Resistance | Withstands temperature differences up to 250°C |
| Impact Resistance | Superior impact strength compared to annealed glass |
| Breakage Pattern | Shatters into small, blunt granules—minimizes injury risk |
| Optical Distortion | Minimal—within industry standards for bent glass |
| Flatness Tolerance | ±0.5mm per meter (post-bending) |
| Radius Tolerance | ±2mm (varies by radius and thickness) |
Quality Standards & Certification
| Standard | Description |
|---|---|
| EN 12150 | European standard for thermally tempered glass |
| EN 1863 | European standard for heat-strengthened glass |
| ASTM C1048 | American standard for heat-treated flat glass |
| ANSI Z97.1 | Impact safety glazing standard |
| 3C Certification | Chinese safety glass certification |
| ISO 9001 | Quality management system |
Quality Control
| Inspection Stage | Testing Method |
|---|---|
| Raw Glass | Optical quality, thickness tolerance, surface defects |
| Edge Processing | Edge quality, chip detection |
| Pre-Bending | Dimensional accuracy of cut glass |
| Post-Bending | Radius measurement, optical distortion, surface quality |
| Tempering | Surface compression test, fragmentation test |
| Final Inspection | 100% visual inspection, dimensional verification |
Comparison: Bent Tempered vs. Bent Annealed Glass
| Feature | Bent Tempered Glass | Bent Annealed Glass |
|---|---|---|
| Strength | 5–7x stronger | Standard strength |
| Safety | Shatters into granules | Sharp shards upon breakage |
| Thermal Resistance | High (up to 250°C ΔT) | Low (risk of thermal stress breakage) |
| Post-Breakage Integrity | None—completely shatters | Sharp fragments remain attached |
| Applications | Safety glazing, structural, exterior | Non-critical interior, decorative |
| Cost | Higher | Lower |
| Processing | Must be bent before tempering | Can be bent cold (risk of breakage) |
Packaging & Delivery
| Aspect | Details |
|---|---|
| Packaging | Custom A-frames with padded supports; interleaving paper; edge protectors |
| Shipping | Specialized transport for curved glass; export-grade wooden crates available |
| Lead Time | 15–30 days depending on complexity, quantity, and radius requirements |
| Minimum Order | Custom per project—prototype to mass production |
Why Choose Our Bent Tempered Glass
- Precision Bending: Advanced tempering furnaces with bending systems for consistent radius accuracy
- Large Format Capability: Up to 3000mm × 5000mm—accommodating large-scale architectural projects
- Full Customization: Any radius, shape, thickness, and finish—from prototype to production
- Integrated Manufacturing: Cutting, edging, drilling, bending, tempering, and lamination all in-house
- Quality Assurance: Rigorous inspection at every stage—from raw glass to finished product
- Global Expertise: Trusted by architects, designers, and contractors worldwide
- Technical Support: Expert guidance on feasibility, radius limitations, and installation requirements
Design Considerations
| Consideration | Recommendation |
|---|---|
| Minimum Radius | Consult with engineering team for your specific thickness and shape |
| Holes & Cutouts | Must be processed before bending; location and size limited by curvature |
| Edge Finish | Polished edges recommended for safety and aesthetics |
| Lamination | Required for overhead applications, balustrades, and safety-critical installations |
| Installation | Specialized hardware and experienced installers required |
| Thermal Stress | Consider solar exposure and thermal movement in design |
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