How is Tempered or Toughened Glass made?


Tempered Glass coffee Table Top

Tempered or Toughened Glass

Tempered or Toughened glass is a type of safety glass that is widely used in a variety of applications, including automotive, construction, and household appliances. It is known for its strength and durability, and it is made through a specialized process called tempering. In this blog, we will explore how tempered glass is made.

Raw Materials

The first step in the production of tempered glass is the gathering of raw materials. Tempered glass is typically made from high-quality annealed glass that is free from defects and impurities.

Cutting and Shaping

Once the raw materials have been gathered, the glass is cut and shaped into the desired size and shape. This is typically done using a specialized cutting machine that is designed to cut the glass with precision.

Heat Treatment

After the glass has been cut and shaped, it is subjected to a heat treatment process. The glass is placed in a tempering furnace and heated to extremely high temperatures, typically around 620 degrees Celsius (1150 degrees Fahrenheit). The glass is then cooled rapidly, typically by blowing air onto the surface of the glass. This rapid cooling process creates a strong and durable glass that is resistant to breaking.

Quality Control

Once the tempered glass has been produced, it undergoes a series of quality control tests to ensure that it meets the required standards. This includes testing for strength, durability, and resistance to impact and thermal shock.

Final Processing

After the tempered glass has been tested and approved, it is ready for final processing. This may include cutting the glass to the desired size, shaping it further, or adding any necessary coatings or finishes. Once the final processing is complete, the tempered glass is ready to be used in a variety of applications, such as automotive windshields, building facades, and shower doors.


In conclusion, the production of tempered glass is a complex process that involves careful attention to detail and specialized manufacturing techniques. From the gathering of raw materials to the final processing, every step in the process is essential to producing high-quality tempered glass that is strong, durable, and widely used in a variety of applications.

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