Attention should be paid to the following installation and use items when buying double door locks: 1. Purchase door locks, choose key locks with a large number of locks.
上海11选5Because the greater the number of teeth, the greater the difference, the lower the interlock rate.
2, the choice of door locks should be based on their hobbies and the circumstances of the door.
上海11选5The door locks should be chosen to consider the width and thickness of the doorframe.
3, when purchasing, we should investigate the appearance quality of goods, whether it is flat or lubricated, including locks, locks and locks.
It is not complete, and the surface color of the electroplating and spray paint parts is not gorgeous and uniform, and there are some beautiful defects, such as the bubble, the bottom, the rust, the oxidation trace and the damage.
4, it depends on whether the key is smooth and smooth, and the trademark above should be clear and standard.
上海11选5The key is pierced into the lock hole and open the door lock. It should be smooth, sensitive and unobstructed.
5. Press the lock handle and rotate the lock knob to see if it is open.
上海11选5It is possible to lock the door safely and safely to see if it is useful, and advocate that every lock should be tested for at least three times.
上海11选5The length of the lock tongue can not be too short to view the door lock.
6, we should look at the clarity of the text picture of the goods package, and mark the name, type, trademark, name and address of the company, the date of production and so on.
In addition, there are commodity certificates and instructions in the package.
上海11选57. The door lock is not too loud when the door is locked and the door lock is locked when the door is closed; if the door is closed, the door is not sloshing; the lock tongue is not too long or too short; the front and rear panels of the door lock are not balanced; when the door lock closes, the door is not swayed. Move.