Are there any technical requirements for fire locks?

Update:Dec 12,2023
Summary:Fire locks need to meet the following technical requirements: 1. The firmness, flexibility and appearance quality of the fire lock shall comply with ......
Fire locks need to meet the following technical requirements: 1. The firmness, flexibility and appearance quality of the fire lock shall comply with the provisions of QB/T 2474. 2. The fire-resistant time of the fire lock shall not be less than the fire-resistant time of the fire door installed and used. 3, in the process of fire test, fire lock should be no obvious deformation and melting phenomenon. 4, in the process of fire resistance test, fire lock should be no fire phenomenon. 5, in the process of fire resistance test, fire lock should be able to ensure that the fire door leaf is closed.