Upgrade anti-theft locks need to find regular manufacturers

Class B lock into a security door selling point

When the reporter visited the market, it was found that many security door businesses have already used the B-class lock as a selling point. Some brands even set a banner outside the store, indicating that their own security door is a B-class lock, and its anti-theft performance is the original A-level lock. Unmatched. There are also some merchants, although they have not promoted the B-level locks in a prominent position, but when introducing the data such as the thickness of the security door steel plate, the B-level locks are also the focus of a promotion. Some salesmen said that their locks are patented and it is difficult to describe them with the national standard. "If the thief sees this lock, he will leave and will not try."

In some small markets, the reporter also found that many stalls that repaired locks claimed to be able to provide lock-change services. A stall owner told reporters that he can provide super B-class locks, which is safer than B-class locks. Each lock is about 350 yuan. In addition, some residential buildings also have a lot of small advertisements, which means that they can change the lock core of the famous security door, and also upgrade the lock core.

Distinguish lock level by key

Chen Sunfu, technical director of Beijing Risho Group's security door, told the reporter that according to the General Technical Conditions for Anti-theft Security Doors, GB17565-2007, the standard level of anti-theft locks for Class B, C and D security doors are Class A, only the highest level. Levels require a Class B anti-theft lock.

Relevant experts told reporters that because Class A security doors are more expensive, general households use products below Class A, so Class A locks are extremely common, which is the minimum configuration required for qualified security doors. However, Chen Shanfu said that in terms of safety, the B-class locks have almost doubled the anti-theft performance compared with the A-class locks from the test values ​​of various performances. From the perspective of anti-theft performance, it is necessary to upgrade the locks. of. The reporter checked the "GA/T73-94 mechanical anti-theft lock" and concentrated the anti-theft lock into two levels. The common protection level is the A-level and the advanced protection level, that is, the B-level. There is no such thing as the super-B level. In the anti-vandal function, the B-class lock is almost double the A-level lock in the length of anti-drilling, anti-saw, anti-smashing, anti-pull and anti-shock. In the anti-technical opening time, the Class B lock is no less than 5 minutes, and the Class A lock is only not less than 1 minute.

How do consumers distinguish their own lock grades? Experts told reporters that the easiest way is to look at the keys. A typical Class A lock key will present several vertical grooves with serrations in the grooves. However, the Class B lock will be next to the vertical groove, and an additional S-shaped groove will appear.

It is best to find the original manufacturer to do the upgrade

B-level locks are good, but you can't just find someone to upgrade. Experts remind that if there is an upgrade demand, the original security door manufacturer should be found. Workers who affix small advertisements in the corridors are not necessarily reliable, although they are cheap.

First, not all models of security doors can match Class B locks. Consumers should determine from the original manufacturer whether their own security door can be upgraded. Secondly, the quality of the locks on the market is mixed. The original factory can guarantee that the locks have a regular source, and the counterfeit products may not reach the A level. Once again, the original factory installation technology passed. "If the B-class lock really works, the installation is not in place, it is useless work." Experts remind consumers that most of the security door A-class locks are standard, so there is no need to mark in the contract. However, if you upgrade to a B-class lock, you should pay attention to the label in the contract, so as to avoid the merchants to change the locks privately, and it is difficult to protect their rights in the future.