Now there are many materials for indoor door locks, including copper, stainless steel, zinc alloy, etc. So what kind of door lock is of good quality? If you have enough budget, the stainless steel indoor door lock is the best choice. Stainless steel lock with high strength, high safety factor and no discoloration is the best choice for indoor door lock. Zinc alloy door lock is very close to stainless steel door lock, many people can not distinguish it, and it is easy to be fooled. About the door lock purchase skill, teaches you how to choose a satisfactory good door lock!
1. Check whether the lock cylinder spring of the lock is sensitive.
You can open the lock cylinder repeatedly to see the sensitivity of the lock cylinder spring. If it is not very sensitive, do not buy it.
2. Observe the treatment quality of the lock surface
It is also the key to measure a good lock to observe the surface treatment quality of the lock. At present, there are three kinds of surface treatment of locks on the market, namely coloring, painting and electroplating. These three kinds of treatment work are to add a layer of dense protective film on the lock surface, in addition to the role of anti-corrosion and anti rust, and also to make the locks more beautiful. And these three treatment methods are undoubtedly the best electroplating, coating smooth and uniform, bright color, no bubbles, corrosion and rust resistance first-class.
3. Pay attention to lock materials
We must pay attention to the materials of locks when buying indoor locks. As we mentioned earlier, stainless steel locks are the best. In addition to stainless steel locks, copper locks and zinc alloy locks are also a good choice. Copper locks have superior mechanical properties but high prices. Zinc alloy locks are strong, wear-resistant and corrosion-resistant.
4. Feel the quality of locks
In addition to observation, we can also feel the lock. Generally speaking, the heavier the lock, the thicker the material used on the surface, the more wear-resistant, and the higher the quality. On the contrary, the lighter the lock, the thinner the material, the lower the quality and the easier to damage.
5. Check the implementation standard of locks
There are Executive Standards for locks, QB standards for some locks in foreign countries, and the quality of locks is also higher, so imported locks are generally more expensive. Now some brands of locks in our country are already implementing the QB standard, only some small manufacturers are still implementing the original GB standard, so it is necessary to see clearly the implementation standard of locks when purchasing.