What do you think of the quality of the spring lock?

See if there is any obvious gap between the lock tongue and the lock tongue mouth.

The lock tongue mainly depends on the workmanship of the manufacturer. If the gap is small, it means that the workmanship is better; If there is a big gap between the lock tongue and the lock tongue mouth, or even obvious looseness, it means that the manufacturer is not careful in work and its quality is just so-so. When you buy a lock, you will find that the lock tongue has several different shapes.

What impact does this have on the device and use of the lock? According to experts, each locking tongue has its own advantages and disadvantages. It is recommended that you buy locks with locking tongues produced according to national standards.

The larger the lock tongue, the better the anti-theft performance, and the larger the opening, which will not only increase the construction difficulty, but also cause greater damage to the door. In addition, the service life of the two-way retraction lock tongue is shorter than that of the one-way retraction lock tongue, but the safety is relatively high, so you can choose according to actual needs. You can also examine the workmanship and quality of the lock from the following aspects. No bubbles, the brighter and smoother the appearance. The better, then release the handle-you can press the handle down.

 Look at the resilience of the handle. The stronger the resilience, the better the spring inside and the longer the service life.