How to know the lock cylinder level of the security door by the key

The anti-theft door lock cylinder is basically divided into three levels, namely A-level, B-level, and super B-level. The anti-vandal opening time of the A-class lock cylinder is more than 15 minutes, and the anti-technical opening time is more than 1 minute. The anti-vandal opening time of the B-class lock cylinder is more than 30 minutes, and the anti-technical opening time is more than 5 minutes. >>>More

The size of the lock cylinder of the anti-theft door, if you have a strong hands-on ability, you can remove it and measure it, based on the distance between the middle screw hole and the two keyholes, of course, if you are troublesome, you can simply measure it, as shown in the figure below, you only need to measure L1 + L2. >>>More

There are several levels of anti-theft door lock cylinders. >>>More

In modern society, security has become more and more a problem that people pay great attention to, whether it is their own security, or the security of the most important place of residence, almost all urban communities have cameras and security, even in rural areas, most people will have a dog to protect the safety of the family, and this is how the security door is generated. Anti-theft door, as the name suggests, is used to prevent theft, and this is indeed the biggest role of the anti-theft door, and the key to anti-theft is the lock cylinder of the anti-theft door, and different levels of anti-theft locks, the security is very different, do you know what kinds of anti-theft door lock cylinder levels are? Tell you. >>>More

Super B-level anti-theft door lock cylinder: the level is higher, their lock cylinder presents a side column, and the shape of the key is a single-sided blade inner milling groove or outer milling groove. After many tests and research, this super B-level lock cylinder security anti-pry time is as long as six hours, if the thieves use the means of forced opening, the lock cylinder will automatically be stuck, resulting in a situation that cannot be opened. >>>More