Knowledge points! Teach you how to identify the safety level of the lock cylinder.
There are many kinds of locks on the market, but they are inseparable from the lock cylinder. The safety level of the lock cylinder directly affects the safety of the lock. The hard lock body and the high safety level lock cylinder are the real anti-theft locks.
What kinds of lock cylinders are there?
According to Chinese standards, the lock cylinder is divided into two classes, A and B.
1. Class A lock cylinder
At present, the A-level anti-theft lock key on the market mainly has line-styled key and cross key. The internal structure of the A-class lock cylinder is very simple, limited to the change of the pins, and the pins’ groove is small and shallow. In the anti-theft performance, if you unlock it, it only takes about two or three minutes to open, and you can get it faster.
2. Class B lock cylinder
The B-class lock cylinder uses a flat-panel key and has a double-row pin slot. The difference with the A-class lock is that the key surface has a row of curved and irregular lines, which is a safer than class B. The main types of B-class lock cylinders are 3 types, computer double-row lock cylinder, double-row crescent lock cylinder, double-sided blade lock cylinder. If you are a skilled worker, it takes about 5-20 minutes to open. With a strong twist tool, the lock cylinder can be opened in 1 minute.
In addition, we can often see the lock with the C-class lock cylinder. The C-class lock cylinder is the lock cylinder designedand upgraded by the enterprise or factory based on the B-class lock cylinder, which is more safe. The key shape used in the C-class lock cylinder is the single-sided blade inner milling groove or the outer milling slot key. This is a relatively safe grade. From the key, it is generally double-sided double-row with inner milling groove and a blade next to it. Or the curve, this type of lock cylinder still need a skilled veteran also takes about 2 hours to open, the regional mutual opening rate is close to zero (one of the 16 million). The structure of the pins is locked by the double row of blades and the V-shaped side column; if the lock cylinder is opened by a strong twisting tool, the internal part of the lock cylinder is broken, and the self-explosion is locked, resulting in failure to open.