In the minds of some users, they always subconsciously think that the things provided by developers must be bad, including entrance doors. Should I replace the entrance door together with the decoration? This requires us to first determine whether the door is an anti-theft door – a qualified anti-theft door, which is limited by the door and the lock.

Door

The anti-theft door looks quite thick, but in fact it only has two layers of skin (steel plate). The layer outside the door is called the \”outer panel\”; the layer inside the door is called the \”inner panel\”. In the middle of these two layers of panels, some fireproof and sound insulation materials are usually filled.

The thickness of the filling in the middle has nothing to do with safety, but the more filling, the stronger the sound insulation, fire prevention, and thermal insulation capabilities of the door – the safety is the same Under the premise, the thicker the door, of course, the better.

What is related to the anti-theft level is the thickness and locking points of these two panels. What are \”locking points\”? When locking the door with a key, there will be cylindrical lock tongues protruding up, down, left and right. The number of such lock tongues is the locking point.

The security levels of doors are divided into four categories: A, B, C, and D. Among them, Class A anti-theft doors have the highest security level and are also the least common. The panel thickness reaches 1mm/1mm (outer panel/inner panel), and the number of locking points is no less than 12.

Class B anti-theft doors require a panel thickness of 1mm/1mm (the same as the thickness of Class A). ), The number of locking points is not less than 10. The panel thickness of Class C anti-theft doors is required to be 0.8mm/0.8mm, and the number of locking points is not less than 8. The panel thickness of Class D anti-theft doors is 0.8mm/0.6mm. No points Less than 6.

If it is not convenient to check the panel thickness of the anti-theft door, you can only check its locking points.

Lock

Some thieves smash the door directly, so the thickness of the steel plate and the number of locking points are used to prevent it. Some thieves have good skills and can directly open the door and enter – This requires us to use a good set of locks to prevent it.

If the thickness of the steel plate or the number of locking points is unqualified, just It can be solved by replacing the door, but if the security level of the lock is not enough, we can only replace the lock cylinder – the lock and the door are two systems, and the door is good, but the lock is not necessarily good.

Anti-theft door lock. According to the security level, it can be divided into three categories: A, B, and C. The security level of level A lock cylinder is the lowest, and the security level of level B and C increases in order.

We can simply judge the lock cylinder grade by looking at the key: double-sided grooved or cross-shaped keys are generally A-grade and B-grade lock cylinders. Class C lock cylinders generally use flat keys, Class B keys have grooves or cylindrical grooves on both sides, and Class C keys have at least one S-shaped groove.

If it is a smart lock, in addition to the mechanical part, you also need to consider the security of the smart system. Fortunately, the security of smart locks still needs to be improved. Low (if they are willing to learn some technology, they will not become thieves). Cases of door-to-door theft that actually destroy the smart system are relatively rare.