high borosilicate fireproof glass
Description
Description
Source manufacturers direct supply of high boron silicon fireproof glass, boron oxide content is extremely high.The softening point is above 840 degrees.With extremely low thermal expansion coefficient, it is not easy to crack at high temperature, can effectively block flame and thermal radiation, and has high viscosity and can maintain integrity in high temperature environment. At the same time, it has excellent thermal shock resistance and high light transmittance. It is an ideal safety material for building doors and windows, partitions and fire viewing windows.6mm single piece is fireproof for 60 minutes, and 8mm~12mm single piece is fireproof for 90 minutes.
