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Classification of anti-theft locks
Dec 03, 2018

Classification of anti-theft locks

The security door locks that are often seen in the market can be classified into three categories according to the anti-theft level: A-class, B-class and super-B-class.


Class A lock: generally divided into three types. The first one is flat, both sides can be inserted into the keyhole to open the door. The second is flat and semi-circular, it has two sides, one side is smooth, another side is pin Slot. And the third is a a cross shape. Among them, the flat semi-circle has a good anti-theft performance.


Class B lock: It is a flat key with a double row of bullet slots. Compared with A-class lock, B class lock has a row of curved and irregular lines on the key surface. The main types of lock cylinders are computer double-row lock core, double-row crescent lock core and double-sided vane lock core.


Super Class B: The shape of key is a single-sided blade inner milling slot or an outer milling slot. The type of lock cylinder is a side column cylinder. One side is a double bullet and the other side is a curved groove. Some of them add a row of invisible bullet slots inside the lock cylinder. If the lock cylinder is opened with a strong twisting tool, the inside of the lock cylinder will be destroyed, and its self-protection turns on then you can not open the door.


The anti-theft performance of Super B Class and B Class are much higher than A Class lock. The technical opening time of A Class is one minute or less, and the destructive opening time is less than 15 minutes. Unlocking Class B lock technically costs more than 5 minutes. The destructive opening time is not less than 60 minutes. Super Class B lock guard against technical unlocking time not less than 180 minutes and destructive opening time not less than 30 minutes.


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    Address: No.1 Dongsan RD, Xinlian Industrial Area, Lishui Town, Nanhai District, Foshan City, Guangdong Province, China
    Mob: +86-13826111091
    Tel: +86-757-85619957
    Fax: +86-757-85619955

    Email: hyh5@china-hyh.com


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