fire proof glass
Fire-resistant glass
Fire-resistant glass is a special glass type which can keep its structure unity,thermal insulated performance and heat radiation intensity under the condition of standard of fire-resistance.Fire-resistant grade | Fire-resistant time(minutes) | |
Ⅰ | ≥ | 90 |
Ⅱ | ≥ | 60 |
Ⅲ | ≥ | 45 |
Ⅳ | ≥ | 30 |
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