Technical specifications of lock cylinder

According to the relevant provisions of GA/T 73-2015 "Mechanical Anti theft Locks" in China, the main technical indicators of mechanical anti theft lock cores are currently divided into three levels of security for lock cores: A, B, and C, with A being the lowest and increasing in order.
1. Anti technology activation time: A-level lock cylinder is greater than 1 minute (but less than or equal to 5 minutes); B-class lock cylinder is greater than 5 minutes; C-level lock cylinder lasts for more than 10 minutes.
2. Mutual opening rate: Class A ≤ 0.03%; B-class and C-class ≤ 0.01%.
3. Key quantity: Class A: The key quantity for pin locks should not be less than 6x104, and for blade locks and lever locks, it should not be less than 2.5x104, with a differential exchange of one key; B-level and C-level: The key quantity of the pin lock should not be less than 3x104, and the key quantity of the magnetic pin lock, blade lock, and lever lock should not be less than 1x104, with a difference exchange of two; The theoretical key quantity of mechanical password lock should not be less than 6x107, and the actual convertible key quantity should not be less than 60% of the theoretical key quantity.