What Are The Fire Resistance Levels Of Polyurethane Cold Storage Panels

Polyurethane cold storage panel is a type of polyurethane sandwich panel, which has good insulation and fire resistance. The fire resistance rating of polyurethane cold storage panels can be divided into B1 grade polyurethane cold storage panels, B2 grade polyurethane cold storage panels, and B3 grade polyurethane cold storage panels. B1, B2, and B3 refer to the flame retardancy of building materials.
1. B1 level (flame retardant), self extinguishing approximately 3 seconds after ignition.
2. B2 level (flammable), self extinguishing approximately 3-6 seconds after ignition.
3. B3 level (flammable), with a higher flammability index compared to B1 and B2.
Fire resistance ranking: B1>B2>B3, which can be determined based on the actual needs of the cold storage project. If the budget is sufficient, polyurethane cold storage panels with high fire resistance can be selected, such as B1 and B2 (to reduce the risk of accidental fire).