Media

Fire resistance of fire shutter doors

Update:08-09-2018
Abst:

When the fire radiation intensity of the backfire surfa […]

When the fire radiation intensity of the backfire surface exceeds the critical heat radiation intensity specified value, or when the curtain surface is bonfired. This period of time is called the fire endurance and is used to determine the fire resistance rating of steel fire shutters.

www.jinnaike.com

0