What are the fire resistance ratings (such as A2, B1) and certification standards for different products?

Question

Accepted Answer

The fire performance of our architectural metal composite panel products strictly complies with Chinese national mandatory standards. All relevant products must meet the requirements of GB 8624-2012 "Classification for burning behavior of building materials and products", which is the core basis in China for currently evaluating the combustion performance of materials. Under this standard, Class A2 (non-combustible materials) and Class B1 (flame-retardant materials) are common high-level requirements in the industry.

The specific fire resistance rating (e.g., A2 or B1) of a product is not fixed but depends on its specific structure, such as the type of core material used, the thickness of the face sheets, and the overall composite manufacturing process. Therefore, different product series or configurations may achieve different ratings.

Furthermore, the key test method standards upon which the rating determination relies include GB/T 5464 (Test for non-combustibility) and GB/T 14402 (Determination of the heat of combustion), among others. For projects with strict fire safety requirements (such as subways, hospitals, and high-rise building curtain walls), we strongly recommend clarifying the required rating level during the product selection stage. We can provide corresponding third-party authoritative test reports for the relevant products based on your specific project specifications, for use in design review and acceptance.