What are the levels of anti theft door lock cylinders?

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.

They are usually the best choice for shops, businesses or factories, where they are safe and reliable, and users can rest assured.

Class A lock: the lowest anti-theft level, generally not recommended;

Class B lock: with a double row of marble slots, and their keys are designed with non-standard curves, the lock cylinder of the anti-theft door is a higher level, their lock cylinders mainly have computer double rows, double-sided blades, double rows of crescent three kinds, can ensure fifteen minutes of anti-pry performance. Nowadays, many communities or households use this kind of B-level lock cylinder with high safety factor.

1. A-level anti-theft door lock cylinder A-level anti-theft door lock cylinder is still relatively ordinary anti-theft, mainly a word key and a cross key, the internal structure is also relatively simple, and the change is only in the change of the marble, and the marble groove is few and shallow. This type of door cylinder has an extremely high rate of mutual opening. The marble structure is a single row of marbles or cross locks.

2. Class B anti-theft door lock cylinder Class B anti-theft door is mainly a flat key, and there is a double-row marble slot, which is different from a class A key is that there is an extra row of curved and irregular lines. The lock cylinder is divided into 3 types, computer double-row lock cylinder, double-row crescent lock cylinder, and double-sided blade lock cylinder. This anti-theft door lock cylinder level is one that many people choose.

3. Super B-level anti-theft door lock cylinder (C-level) The safety factor of the super B-level anti-theft door lock cylinder is still relatively high, it is a single-sided blade with a milling groove and an external milling groove key, and the type of lock cylinder is a side post lock cylinder. The internal structure is also for the double-row blades plus V-shaped side post locking, the anti-theft coefficient is still very high, if it is opened with tool wallpaper, it will lead to the internal destruction of the lock cylinder, self-explosion locking, resulting in the inability to open. This level of anti-theft door lock cylinder is still very common on villa doors.

At present, there are roughly three levels of lock cylinders on the market: A-grade, B-grade and super B-grade.

A, B, C, super C, generally with super B or above.