Lightproof wall how to fire
These three criteria are three basic requirements for detecting whether a partition can reach a certain refractory limit;
Landlord asked if the fire? Very simple to say that fire is built on the basis of thermal insulation to achieve the purpose of fire;
Light barrier If you need to do fire, you must meet three conditions: stability, integrity, heat insulation;
And light steel keel installation door is the same light steel keel door frame after doing the light steel keel and then do a fixed two-layer woodworking board as a door cover and then the fire door fixed in the woodworking board or in the light steel keel fixed channel steel Made the door sets and then fixed fire doors or not the first gypsum board in the light steel keel on the back of the fixed fire door or with a channel or angle or simply use a wooden fire door
