The security door plays a very important role in protecting the safety of consumers' lives and property. Many people choose the anti-theft door lock core mostly because of the firmness of the anti-theft door material. But how many thieves have ever thought about breaking into the door? The security of the security door mainly depends on the material of the door and the security door lock. The anti-theft door lock also plays an important role in protecting the safety of family property. How to replace the anti-theft door lock core has always been the concern of consumers.

At present, the main anti-theft door lock cylinder on the market can be divided into: European lock cylinder, which is what we call plug-in door lock, is mainly used by the major anti-theft door manufacturers such as Panpan, door core, Dachuan, Xinduo and other anti-theft door manufacturers; American thread lock cylinder is a new type of door lock, with good quality and high safety, which is generally produced by anti-theft door Commercial use in high-grade security doors; fire lock cylinder is a special anti-theft lock.

The main body lock structure of the European type lock cylinder is embedded in the door body, and the handle cover plate is assembled on the door. Because the European type lock cylinder has good anti-theft property, it is suitable for use on the anti-theft door. It is a widely used anti-theft door lock type in the market at present. The size of European style lock cylinder is mainly based on the thickness of anti-theft door.

According to the national anti-theft door lock industry regulations, anti-theft door lock anti-technical opening more than 1 minute to 5 minutes, anti-destructive opening more than 15 minutes to 30 minutes of products belong to A-level security door lock, A-level anti-theft door lock is often said in the anti-theft door market ordinary anti-theft door lock.

The anti-theft door lock which can prevent the technical opening for no less than 5 minutes and the anti-destructive opening for no less than 30 minutes belongs to the B-class anti-theft door lock, which is what we call the advanced anti-theft door lock in our daily life. At present, most of the anti-theft door locks sold in the anti-theft door market are A-level anti-theft locks, and even some small anti-theft door manufacturers still use unqualified anti-theft locks.

Most of the anti-theft doors bought by consumers in the market are ordinary anti-theft locks, and the anti-theft safety performance of the locks is inferior. Therefore, the author suggests that consumers should replace the lock cylinder of the anti-theft door lock immediately after they purchase the anti-theft door, so as to ensure the safety of family property.

The replacement of lock cylinder of anti-theft door lock can be simply summarized as three steps. First of all, we need to find the location of the screw hole in the lock cylinder of the security door lock, and then screw out the screw to remove the lock cylinder of the anti-theft door lock. Secondly, we slowly rotate the key, in a certain position, that is, when the fork is in the lock cylinder groove, the whole lock cylinder can be pulled out from the lock body.

After that, we carefully measure the size of the anti-theft door lock cylinder. According to the size of the anti-theft door lock cylinder, we can buy the same size anti-theft lock cylinder in the market according to the size of the anti-theft door lock cylinder. How to install the anti-theft lock cylinder inside the anti-theft door lock body can install the general security anti-theft door lock for family safety.