GB/T 24480 - 2009 Standard Specifies the fire resistance test of elevator floor doors. It specifies the technical parameters of the test equipment, such as heating furnaces, etc., elaborates the test process, including the installation of the floor door, the heating system simulates the fire scene, and observes and records the integrity and heat insulation of the floor door within the specified time. The fire resistance performance of the elevator floor door is related to the safe evacuation of personnel and fire control when a fire occurs. Testing according to this standard can accurately inspect the fire resistance of the floor door, help the production enterprise to ensure the mass of products, and ensure that the elevator effectively blocks the spread of flame and heat under fire conditions, providing key protection for the safety of passengers.