Plate glass is flat glass used for windows and basic glazing, while tempered glass is heat-treated safety glass that is stronger and breaks into safer pieces.
Traditionally, plate glass was produced by grinding and polishing large sheets of glass. Today, most plate glass is manufactured using the modern float glass process, where molten glass spreads evenly over a bath of molten tin to create perfectly flat sheets.
Plate glass has several characteristics that make it useful for basic glazing and fabrication.
Smooth and transparent surface
The float process produces clear glass with minimal distortion.Easy fabrication
Plate glass can be cut, drilled, polished, or shaped during manufacturing.Lower impact resistance
Compared with safety glass types, plate glass is more fragile.Sharp break pattern
When shattered, it usually breaks into large sharp shards, which can cause injury.








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