The structure of door mechanical lock is mainly divided into three parts: lock cylinder, lock body and panel handle.
Raw materials generally include: 304 stainless steel, pure copper, zinc alloy and aluminum alloy.
The material selected for the lock cylinder is pure copper or 304 stainless steel. Pure copper has good mechanical properties. 304 stainless steel has good stability, high strength and is not easy to rust.
The lock body has high requirements for the strength and stability of raw materials. It is recommended to select 304 stainless steel raw materials first.
The panel handle can be made of 304 stainless steel, pure copper and aluminum alloy. Aluminum alloy: light weight, high strength, no coating, not easy to rust. The strength of zinc alloy is not high, and it is mostly used at door handles.
Mechanical anti-theft locks are classified according to grade: A, B and C.
The way of hierarchical differentiation is obviously based on the clutter of keys.
Class a anti-theft lock cylinder:
(1) the key is flat or crescent type, with a row of concave key slots on one or both sides; (2) The key is cross shaped and has convex key slots on four sides.
Class B anti-theft lock cylinder:
(1) the key is flat or crescent type, with two rows of concave key slots on one or both sides;
(2) the key is a cylindrical multi-point concave key hole.
Class C anti-theft door lock cylinder:
(1) the key is flat type, with two rows of concave and S-shaped key slots on one or both sides;
(2) the key is a double snake shaped key slot inside and outside.
Conclusion: through data comparison, it can be seen intuitively that class C anti-theft door lock core has high anti-theft coefficient. Therefore, when selecting mechanical lock, select class C lock cylinder first.
There are two other suggestions:
(1) when purchasing anti-theft doors, we should not only ask the level of the store's anti-theft door locks, but also ask whether they can be replaced to avoid trouble because the level of the locks does not meet our own requirements but cannot be replaced.
(2) when selecting the mechanical anti-theft door lock, try to select one with the function of actively locking the door, which is more convenient. As long as the door is closed, it will actively extend the main lock tongue, and there is no need to worry about forgetting to lock the door at night.
Article source: Zhongshan mechanical lock manufacturerhttp://www.zshaochangsheng.com/
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