One, how much does a handle lock cost?
Class A lock: The key is either flat or crescent-shaped, with one or two rows of grooves or four sides with cross-shaped protrusions on one or both sides. The price is 20-50 yuan per piece.
Grade B lock: The key is either flat or crescent-shaped, with two rows of recessed key slots or cylindrical, multi-point recessed keyholes on one or both sides. The price is approximately 100 yuan per key.
Super-Grade Lock: The key is a flat type, with two rows of recessed slots and S-shaped keyway on one or both sides, or two snake-shaped keyways on the inside and outside. The price is above 200 yuan per piece.
Two. Key selection points for double-acting locks.
1、Inspect the surface preparation
Poor-quality locks typically have a rough surface, while high-quality locks generally have a smoother texture and better appearance.
2、Check the number of bullet holes.
Generally, the most common types available on the market are single-row ball bearings, also known as Class A locks, which have weak opening capabilities and weak resistance to drilling, prying, and breakage. Double-row ball bearings are generally considered to be of higher quality.
3. Examine the key shape (the key's shape can directly reflect the internal structure of the lock mechanism).
Currently, the most common key shapes on the market are cross-shaped and one-piece designs. A slightly better option is the crescent-shaped key, but crescent-shaped keys have several drawbacks, such as insufficient opening time, inability to prevent picking, and weak anti-drilling capabilities. In recent years, various non-traditional key designs have emerged, such as keys with staggered teeth, double-row teeth, and snake-shaped anti-picking mechanisms, which have significantly improved the security of locks. These designs represent a completely new breakthrough and are setting the trend for the future lock market.