Whether tempered glass is used for the window depends on the specific application scenario and safety requirements. The following is a classification description of common situations:
1. Ordinary glass (non-tempered)
Features: Relatively low price, but it is prone to form sharp fragments when broken, posing a safety hazard.
Applicable scenarios: Old houses, some low-rise buildings or areas with low safety requirements (such as fixed Windows in non-open positions).
2. Tempered glass (safety glass)
Features
Its strength is 3 to 5 times that of ordinary glass and it has stronger impact resistance.
When broken, it is in granular form and is less likely to cause injury.
Temperature difference resistance (can withstand a temperature difference of approximately 200℃).
Mandatory usage scenarios (in accordance with national building standards) :
High-rise buildings (such as Windows with a height of ≥1.5 meters from the ground).
Areas prone to collision such as floor-to-ceiling Windows and balcony doors.
Public buildings (schools, shopping malls, etc.).
Tempered glass must be used for the outward-opening Windows of buildings with seven floors or more.
Advantages: High security, suitable for most scenarios such as homes and businesses.
3. Other types of safety glass
Laminated glass: A PVB film is sandwiched between two layers of glass. Even if it breaks, the fragments remain adhered, preventing penetration (used for skylights, curtain walls, etc.).
Insulating glass: Double or multi-layer glass filled with inert gas in the middle, with good heat insulation and sound insulation, and can be combined with tempering process (commonly seen in energy-saving buildings).
How to determine if it is tempered glass?
Mark inspection: Check if there is the tempered lodo and the words "Tempered" in the corner.
Polarized light observation: When looking at the glass surface with a polarizer, colored stripes will appear (professional tools are required).
Edge inspection: The edges of tempered glass usually have a slightly frosted feel.
