Standard
Scope of Application
The EU's unified fire performance classification standard for building products and components, used to evaluate the performance of materials in fires (combustibility, smoke, toxicity, etc.).
Applicable objects: Building materials (such as walls, floors, cables, pipes, thermal insulation materials) and systems (such as ventilation ducts, fire doors)
Core Technical Requirements
| 
			 Class  | 
			
			 definition  | 
			
			 Example materials  | 
		
| 
			 A1  | 
			
			 Completely non-flammable, smokeless and heat-free.  | 
			
			 Stone, concrete, glass  | 
		
| 
			 A2  | 
			
			 It is extremely difficult to burn, and releases very little smoke and heat when burning.  | 
			
			 Stone slabs, partially fire-resistant steel  | 
		
Remarks
Fire smoke exhaust ducts shall comply with the fire resistance class (EN 13501-1-A1/A2 standard) to ensure that strength and fire performance meet the standards simultaneously at high temperatures
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