There are three levels of anti-theft door lock cores, a […]
There are three levels of anti-theft door lock cores, as follows:
The anti-theft door lock core level duA level lock core, with the technical opening time within 1 minute.
The anti-theft door lock core level B lock core, with the technical opening time within 5 minutes.
The anti-theft door lock core level is super B-class lock core, which cannot be opened technically or the technical opening time exceeds 270 minutes. It is also called a C-level lock cylinder, which means that the security exceeds the B-level.China Cheap Cylinder For Door Locks
Class A lock cylinder
The A-level lock cylinder is an old-fashioned lock cylinder. The key is a cross flat or crescent key with a convex keyway. One or both sides have a row of concave keyways. This type of key can be used in a few seconds with tin foil. You can open it, if you still use this key at home, quickly change it. The A-level lock cylinder can no longer deter thieves.
Class B lock cylinder
Class B lock core keys are flat or crescent type. Class B lock keys are more complicated than Class A keys. The key slot is single-sided or double-sided with two rows of concave or cylindrical multi-point concave keyholes.
Super B level lock cylinder
The super-B lock core key is of flat type, and the key slot is single or double-sided with two rows of concave and S-shaped, or internal and external double snake-shaped internal milling groove structure. It is the most complicated lock cylinder, and also the safest lock cylinder. The tool opening time is more than 270 minutes and even cannot be opened. Now it is better to use the super B-class lock cylinder. The mini lock cylinder of Wangli security door on the home hotline is very powerful.