Tempered Glass

Tempered glass is a type of safety glass produced by heating high-quality float glass to near its softening point and then rapidly cooling it with uniform, high-pressure air jets. This controlled thermal quenching process induces balanced compressive stresses on the surface while the interior remains in tension. As the outer layers solidify quickly during cooling and the inner core contracts more slowly upon subsequent cooling, a permanent stress profile is created—significantly enhancing both mechanical strength and thermal stability.

This engineered stress distribution multiplies the glass’s resistance to impact, bending, and thermal shock, making it ideal for demanding architectural and safety-critical applications.

Key Features

• · Enhanced Safety: Upon breakage, tempered glass fractures into small, blunt-edged granules rather than sharp shards, minimizing the risk of injury.

• · High Mechanical Strength:

• Bending strength: 3–5 times that of annealed (ordinary) glass

• Impact resistance: 5–8 times greater than standard glass

• · Superior Wind Load Resistance: Withstands wind pressures 1.5–3 times higher than conventional glass, making it suitable for high-rise and exposed façades.

• · Excellent Thermal Shock Resistance: Capable of enduring temperature differentials up to 250°C, offering approximately 3 times the thermal shock resistance of ordinary glass.

As a certified safety glass, tempered glass is widely specified in environments requiring durability, structural performance, and occupant protection, including:

• · Glass doors and frameless entrances

• · Building curtain walls and façades

• · Interior partitions and balustrades

• · Elevator cabins and vision panels

• · Windows and glazed building envelopes

• · Furniture (e.g., tabletops, shelves)

• · Household appliances (oven doors, refrigerator panels, etc.)

• · Maximum Size: 2,440 mm × 6,000 mm

• · Minimum Size: 200 mm × 300 mm

• · Thickness Range: 3 mm – 25 mm

Bent (Curved) Tempered Glass Specifications

• · Thickness Range: 5 mm – 19 mm

• · Maximum Size: 2,400 mm × 2,500 mm

• · Minimum Size: 400 mm × 600 mm

• · Minimum Bending Radius:

• 1,000 mm for 5–6 mm thickness

• 1,200 mm for 8–12 mm thickness

• 1,500 mm for 15–19 mm thickness

Quality & Compliance

• · Complies with GB 15763.2–2005: Safety Glass for Buildings – Part 2: Tempered Glass (China National Standard)

• · Certified under the China Compulsory Certification (CCC) for safety glass products