Teach you how to judge the quality and method of anti-theft lock
Identify the good and bad skills and methods of locks:
1. Judging according to the lock body material of the lock: This involves a lot of professional knowledge and the technology of various manufacturers. The mainland produces iron, steel, stainless steel and zinc alloys. Due to the limitation of process and cost, the hardness of the lock rod is not enough. It is easy to be cut by pliers and hydraulic pliers.
2, according to the lock core of the lock to judge: the average person buys a lock only to look at the shape, feel great, it must be good. As long as you pay attention, no matter which kind of domestic lock you buy, the lock core is generally copper. The characteristics of copper are soft. With electric drill and concentrated acid, you can easily destroy the copper lock core. At present, the commonly used lock cylinder is a European lock cylinder. In addition, there is an American thread lock cylinder and a fire lock cylinder. The latter two are relatively safe.
3, according to the key of the lock to judge: there are many keys to lock, cross, round mouth, crescent, a lot of various colors, many keys are made of copper or aluminum-iron alloy, it is easy to be copied, the current better materials There are steel, as well as a new type of electronic key, which is safer.
4. Judging according to the thickness of the filler and the steel plate: You can look at the installation of the security door. Generally, the cat's eye is screwed off the door to see what is inside. If some cat eyes are already secure, and it is not screwed. Down, you can watch it when you lock it. The consumer can tap the security door with a hand, and the sound is sounded, indicating that the thickness of the steel plate is sufficient, and the filler is real. If the sound sounds "squeaky", it means that the thickness of the steel plate is not enough.
5, the lock point is just a scorpion: lock is an important part of the security door, many sell the security door when selling, they say that their security door locks more points, in fact, this is just a nephew to attract customers. The real good lock is not the more locks, the better. There are no essential differences between the four lock points and the 10 and 20 lock points. No matter how many lock points there are, the center is on the lock cylinder. As long as the lock core is broken, more lock points are useless.
6. Look at the production and sales license: Consumers can check the relevant certificates of the product. In addition to this production license, the manufacturer should also have the corresponding technical inspection certificate. Such as fire test report, seal test report, etc., so that you can have a general understanding of the technical performance of the product.