With a strong twisting tool, the B-class lock core can be opened within 1 minute. It takes more than 240 minutes for a professional to open a Class C lock cylinder.
At present, the domestic lock cylinder market includes three levels of locks: A, B, and C-level locks. In fact, you can tell the difference between these three types of locks by looking at the keys.
Class A lock: Currently, the keys for Class A anti-theft locks on the market mainly include single-word keys and cross keys. The internal structure of the Grade A lock cylinder is very simple, limited to the changes of pins, and the pin slots are few and shallow. Within 1 minute of the anti-technical opening time, the mutual opening rate is extremely high. The marble structure is a single row of marbles or a cross lock. The unlocking time of a Grade A lock cylinder: professionals can open it within 30 seconds. Unable to upgrade. After a large number of investigations, it was concluded that 90% of thieves will give up if they fail to open the lock within one minute. However, it usually takes more than ten seconds for thieves to open a Class A lock. Therefore, the safety factor of Class A locks is lower. .
Class B lock: The key of Class B lock is a flat key with a double row of pin slots. The difference from Class A lock is that the key surface has a row of curved and irregular lines. There are three main types of lock cylinders: computer double-row lock cylinder, double-row crescent lock cylinder, and double-sided blade lock cylinder. The anti-technical opening time is within 5 minutes, and the mutual opening rate is high. With a strong twisting tool, the lock cylinder can be opened within 1 minute. The unlocking time of Class B lock cylinder: Class B lock cylinder professionals can open it in more than 5 minutes and less than 120 minutes.
C-level lock: The safer one on the market currently is the C-level lock cylinder, which uses a double row, computer, and compound curved slot patented key, and cannot be opened technically for 270 minutes. Among them, C-level lock cylinders are mostly used in the financial industry and less used by civilians. The unlocking time of a C-level lock cylinder: it takes more than 240 minutes for professionals to open it.
The three levels of unlocking time are different. The longer the time, the higher the security factor and the lower the possibility of being stolen.
In fact, anti-theft at home cannot only rely on security doors. When you are at home in front of the TV, you should still pay attention to some anti-theft details in life. For example, if you are alone at home, it is best to lock the security door and close it tightly at night. Doors and windows, this way there is less chance of theft happening in your home. When buying anti-theft locks, it is best to choose brand-name locks, because some no-name locks cut corners during production, have incomplete marbles, and have poor anti-theft performance.