The manufacturer of external opening handwheel tells you that anti-theft doors with high safety factor are very popular with owners! Therefore, before choosing an anti-theft door, it is necessary to have a certain understanding of the level of the lock cylinder. The external opening handwheel manufacturer tells you that the lock cylinders currently available on the market are roughly divided into a-grade lock cylinders, b-grade lock cylinders, and super-b-grade lock cylinders, including the new c-grade lock cylinders developed from super-b-grade lock cylinders. level. Among them, the structure of the a-level lock cylinder is relatively simple and the safety factor is not high. Therefore, the lock cylinder of the anti-theft door should be selected at a level above the super-b-level lock cylinder, so as to ensure the safety of the family.

step:
1. Home anti-theft locks should be updated in a timely manner, and new hybrid locks should be adopted.
2. You should pay attention to the choice of home anti-theft locks. The external opening handwheel manufacturer tells you to try to choose locks from large regular manufacturers, and the quality and safety are guaranteed.
3. The protruding length of the anti-theft lock tongue (bolt): Class A anti-theft door protruding length should not be less than 14 mm; Class B should not be less than 20 mm. The external opening handwheel manufacturer tells you that the shell of the anti-theft lock is generally made of a steel plate with a thickness of not less than 2 mm or a material with a certain strength.
4. Safety seems to be ineffective, but in fact safety is a big benefit. Conditional families should install electronic alarms and place them within easy reach to call the police.
5. The lock cylinder is the core of the anti-theft lock. All anti-theft locks have only one lock cylinder. As long as the lock cylinder is opened, all the lock points are opened. The manufacturer of external opening handwheel tells you that you should pay special attention to checking whether there are welding defects, such as open welding, unwelded, missing welding, slag inclusion, etc. class).