Nakajima Glass Company, Inc.

Tempered Glass

Tempered Glass / Tough Seifer

High StrengthSafety
Structure Diagram
Tough Seifer structure (heat-treated glass)

Tough Seifer is glass that has been strengthened by heating and rapid cooling, providing 3 times the wind pressure resistance compared to glass of the same thickness. By reducing glass thickness for required strength, benefits include weight reduction, compatibility with sash grooves, and improved transmittance.

Handrail installation sample
Variations

In addition to standard glass, we also process patterned glass, heat-absorbing glass, and heat-reflective glass. (Some types of patterned glass and heat-reflective glass cannot be tempered.)

Handrail installation sample 2