Anti theft standards for lock cylinders

The security level of anti-theft locks is divided into A level, B level, and C level according to national standards.
1. A-level lock core, preventing technical opening for ≥ 1 minute, anti drilling for ≥ 10 minutes, anti sawing for ≥ 5 minutes, anti prying for ≥ 10 minutes, anti pulling for ≥ 10 minutes, and anti impact for ≥ 10 minutes.
2. B-class lock core, preventing technical opening for ≥ 5 minutes, anti drilling for ≥ 15 minutes, anti sawing for ≥ 5 minutes, anti prying for ≥ 15 minutes, anti pulling for ≥ 15 minutes, and anti impact for ≥ 15 minutes.
3. C-level lock core, preventing technical opening for ≥ 10 minutes, anti drilling for ≥ 30 minutes, anti sawing for ≥ 30 minutes, anti prying for ≥ 30 minutes, anti pulling for ≥ 30 minutes, and anti impact for ≥ 30 minutes.
Category:
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;
C-level: The key is flat, with two rows of concave S-shaped key slots on one or both sides, or double snake shaped key slots on the inside and outside.