What are the differences between lock cores of security doors?

First, the anti-theft door lock core grade

1, the anti-theft door lock core is divided into three grades, namely: A-class anti-theft door lock core, B-class anti-theft door lock core and super-B-class anti-theft door lock core. Anti-theft performance of three kinds of lock cores for security doors: Super Type B >: Type B > Type A. If it is used as an entrance door, at least a security door of Grade B or above should be selected.

Second, how to choose the lock core of the security door

1. Many people used to judge the anti-theft performance of the lock core by looking at the tooth marks of the key. Actually, there are some misunderstandings. We see that the anti-theft performance mainly depends on the structure of the lock core. The side column structure of blades is often much better than the traditional marble structure. When unlocking, it is best to consult a professional teacher and then choose according to the situation.

2. When we choose the anti-theft lock, we should look at the color of the lock core and judge the quality of its workmanship from the details of the color. The lock core with good quality is electroplated, with smooth surface and bright color. Among them, the dark yellow is copper core, which is relatively strong and has good anti-theft performance. The lock core is dull in color, and the zinc alloy with bubbles is gray in color, so the anti-theft performance is average.

3. We can also judge the anti-theft performance of the key from the situation that the key is inserted into the lock core and opened. After the key is half inserted, rotate 5 to 7 components clockwise or counterclockwise, and continue to press the key into the lock. A stuck key indicates that the anti-theft performance of the lock core is poor, and the successful insertion of the lock core in a semi-rotating state indicates that the anti-theft effect is good.