fire proof lock-Technical requirements for fire resistant locks-Cangzhou Jianhua Lock Co., Ltd.

Due to the special using environment of fire lock, its technical requirements are very high.our company strictly execute country technical standard production in many years of produce process, ensuring the product performance and quality improvement.it is also a fundamental commitment to the user on our team, the fire lock technical requirements has the following several aspects:
1, fire lock fastness, flexibility and appearance quality shall comply with the terms of QB/T 2474.
2, fire lock refractory time should not be less than the fire door refractory time installation use.
3, in the process of the fire test, fire lock should be no obvious deformation and melting.
4, in the process of the fire test, fire lock should be in phenomenon of grape vines and no channeling fire.
5 in the process of the fire test, the fire lock should be able to ensure that fire door lock doors is closed.
We have strictly observed Technical requirements about fire lock in many years in the production , that is why our products are recognised by the user, in the future, we will work harder and provide you with high quality fire lock.