The safety of security door

Security lock is the most important component of security door, the performance of security lock is directly related to the safety of the security door, the general use of mechanical and electronic locks. In security lock selection, should pay attention to the product must be designated by the state authority certification. Security lock should have the function of preventing drilling, sawing, anti - skid, anti - pulling and anti - impact. The security lock is divided into single point and multi-point lock, single point refers to the so-called lock locked by lock point itself to closed the door.  Multi point of the lock is to point to in addition to its own lock point, at the same time to drive the sub lock, the formation of a number of points, and distributed around the door frame, enhance the performance of the anti - skid.

The tongue length of security door locks : A level of security door should not be less than 14 mm in length; B level should be not less than 20 mm. Security lock shell commonly used not less than 2 mm thick steel plate or with  a certain strength of the material, folding, openings shall be welded or whole stamping molding. In the main lock tongue drive device and the lock body corresponding to the key parts, there should be anti drilling steel plate or protection measures such as drilling.

The door hinge is components connect door and door frame, mainly to support the door body, and it should have the function of security. At present, the hinge of security door with external and built-in hinge. The built-in hinge is suitable for opening the door, and the external hinge is suitable for the inner door opening. The hinge shaft diameter greater than 12 mm, if the hinge rolled steel used, the closed edge must be welded.