Locks can't work, the security door is thicker, and the locks are more like nothing!
People have faces and doors have facades. As the first level of family entry, the security door is directly related to the safety of family members' lives and property. According to data from the Ministry of Public Security, more than 80% of all household burglaries are entered through the gates of the door, and less than 20% of other entrances through windows and other entrances.
But all along, many users have this misunderstanding: the thicker the security door, the more the locks, the more theft. Is this really the case?
The lock is cracked, and the door lock is thicker and useless.
Over the years, the Chinese security door market has been a bit confusing. In order to have selling points and gimmicks, manufacturers are always advocating that the thicker the security door, the more locks are safer. It is undeniable that from the perspective of violence, the thicker the security door and the more locks, the safer it is.
However, the risk of violence opening and breaking into the door is too great to be easily detected and alerted by surrounding residents. So for the lawless, this is the most costly and least secure method, so it is never easy to use.
Although the technology is difficult to open, it has the advantages of being quiet and not easy to be detected, so it is the first choice for most lawless elements. The technology is mainly aimed at the lock cylinder. Once the lock cylinder is broken, the thicker door and more locks are like a dummy.
Therefore, whether the door is safe is not how thick it is, nor how many lock points there are. As long as the lock is safe, the door is safe.
The question is, what lock is the safest?
Since the key to the security door is the lock, then the problem is, what kind of lock is safe? Today, the door lock tells you from the perspective of national standards: buy a lock must buy a C-class lock, in order to maintain safety.
The latest national anti-theft lock standard - "mechanical anti-theft lock GA / T 73-2015" will be divided into A / B / C three levels, C-level lock anti-tech technology open time requirements can not be opened within 10 minutes, and the B-class lock is In 5 minutes, the A-level lock is 1 minute. In terms of anti-violence opening, the C-class lock is 30 minutes in anti-drilling, anti-saw, anti-smashing, anti-sliding and anti-shock time, 15 minutes higher than the B-class lock.
At present, many lawless elements have entered the room by sawing the lock tongue. The new standard requires that the C-locking tongue should be no less than 24mm, 4mm larger than the A and B-class locks, and certainly stronger than the A and B-class locks.
From a standard point of view, the C-class lock is superior to the A-class lock and the B-class lock in terms of anti-technical opening or anti-violence opening, so it is theoretically the safest. So how do you identify A/B/C locks?
Class A lock: At present, the A-level anti-theft lock key on the market mainly has a word key and a cross key.
Class B lock: Class B lock key is a flat key, with double row of marble slots. The difference with A lock is that there is a row of curved and irregular lines on the key surface. The main types of lock cylinders are 3 types, computer double-row lock core, double-row crescent lock core, double-sided vane lock core.
Class C lock: The key shape is a single-sided blade inner milling slot or an outer milling slot key, and the lock cylinder type is a side cylinder lock cylinder. The structure of the marble 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 core of the lock cylinder is broken, and the self-explosion is locked, resulting in failure to open.