Anti theft standards for lock cylinders
Release time:
Jun 06,2025
Source:
Anti theft locks are divided into "ordinary protection level" and "protection level", with the former represented by the letter "A" and the latter represented by the letter "B". The so-called super B-level and C-level locks on the market are defined by some merchants themselves, strictly speaking, they should be considered B-level locks.
1. A-level lock cylinder, with a minimum technical unlocking time of 1 minute and a minimum destructive opening time of 15 minutes.
A-level lock cores are old-fashioned lock cores, and the keys are cross shaped flat or crescent shaped keys with convex key slots. There is a row of concave key slots on one or both sides. Thieves can open these keys in a few seconds with tin foil. If you still use this type of key at home, replace it now. A-level lock cores are no longer able to prevent thieves.
2. B-class lock cylinder, with a minimum unlocking time of 5 minutes and a minimum opening time of 30 minutes to prevent impact.
B-class lock cylinder keys are flat or crescent shaped, and B-class lock keys are more complex than A-class keys. The key slot is single-sided or double-sided with two rows of concave or cylindrical multi-point concave key holes.
3. Super B-class lock core, with a technical opening time exceeding 270 minutes.
The super B-class lock core key is a flat plate type, and the key slot is single-sided or double-sided with two rows of concave and S-shaped, or an inner and outer double snake shaped internal milling groove structure. It is a complex lock cylinder and also a safe lock cylinder, with a tool opening time of more than 270 minutes and even unable to open.
Classification
Grade A: The key is flat or crescent shaped, with a row of concave key slots on one or both sides or convex key slots on all four sides in a cross shape;
B-level: The key is flat or crescent shaped, with two rows of concave key slots or cylindrical multi-point concave key holes on one or both sides;
Super B-level: The key is flat, with two rows of concave and S-shaped key slots on one or both sides, or double snake shaped key slots on the inside and outside.
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