Tempered Glass Definition
Tempered glass is a heat-treated safety glass that is approximately 4–5 times stronger than regular annealed glass. It breaks into small, blunt fragments to reduce injury risk.
Key Features
High mechanical strength
Thermal shock resistance
Safe breakage pattern
Heat resistance up to 250°C
Applications
Building facades and curtain walls
Glass doors and partitions
Shower rooms and bathroom enclosures
Balustrades, railings, and staircases
Furniture and appliances (e.g. tabletops, oven doors)
Subtypes
Flat tempered glass
Curved tempered glass
Printed tempered glass (with decorative patterns)
Silk screen tempered glass (with solid or dotted ceramic prints)
Insulated tempered glass (for energy efficiency)
Parameter class | Parameter Name | Standard Values | Description |
Thermal Performance | U-value (W/m²·K) | Standard Double Glazing: 2.8~3.2 Low-E Double Glazing: 1.6~2.0 Argon Filling: ↓0.1~0.3 | Lower values indicate better thermal insulation
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SHGC (Solar Heat Gain Coefficient) | Clear Glass: 0.7~0.8 Low-E Glass: 0.25~0.40 | Lower values reduce solar heat gain
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VLT (Visible Light Transmittance) | Clear Glass: 85%~90% Low-E Glass: 70%~80% Frosted Glass: 50%~60% | Affects indoor lighting brightness
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VLR (Visible Light Reflectance) | Clear Glass: 8%~12% Low-E Glass: 15%~25% | Higher reflectance reduces glare
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Acoustic Performance | Rw (Weighted Sound Reduction Index, dB) | 6mm Single Glass: 31 6+12+6 Double Glazing: 34 10+12+6 Double Glazing: 36 6+12+6.5 Laminated Glass: 38 | The higher the value, the stronger the sound insulation effect |
Structural Parameters | Glass Thickness Combinations (mm) | 4+4, 5+5, 6+6, 10+6, 6+6.5 (laminated) | Optimize sound insulation/load-bearing
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Spacer Material | Aluminum (high thermal conductivity) TPS Thermoplastic (warm edge) Stainless Steel (corrosion-resistant) | Warm edge spacers ↓U-value by 0.1~0.2
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Spacer Width (mm) | 6, 8, 10, 12, 14, 16, 18, 20 (2mm increments) | Wider spacers ↑ insulation but ↑ weight
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Gas Filling | Air (standard) Argon (recommended, ↑U-value by 10%~15%) Krypton (premium, ↑U-value by 15%~20%) | Inert gases reduce thermal convection
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Glass Types | Basic Types | Clear Float, Low-Iron, Tinted (Gray/Blue/Green), Frosted, Patterned | Light transmittance of low iron glass ↑5%~10% |
Functional Glass | Hard-coated Low-E (U-value 1.8~2.2) | Soft coating requires inner layer protection |
Soft-coated Low-E (U-value 1.6~1.8, requires inner protection) |
Laminated Glass (anti-breakage/sound insulation)
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Dimensions | Min. Size | 300×300 mm | Most sizes customizable
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Max. Size | 3300×13000 mm |
Sealing Process
| Primary | Butyl Sealant | Gas leakage prevention (bonds spacers)
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Secondary | Polysulfide (aging-resistant) | Silicone is suitable for high temperature areas |
Silicone (high-temperature areas) |
Polyurethane (high strength) |
Edge Design | Warm Edge Spacers | U-value Reduction vs. Aluminum↓0.1~0.2 | Recommended For High humidity areas
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Condensation Risk30%~50% |
Production Capacity
| Daily Output: 14,000 m²/day Expedited Capacity: 20,000 m²/day |
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