购买双开门锁时要注意以下安装和使用中的事项：1、采购门锁要挑选钥匙牙花数多的锁。

因为钥匙的牙花数越多，差异性越大，锁的互开率就越低。

2、门锁样式的挑选要根据自己爱好和门的情况而定。

门锁的挑选要思考门框的宽度、厚度，要选购和门相同敞开方向的锁。

3、购买时要调查商品外观质量情况，是不是平坦、润滑，包含锁头、锁体、锁舌。

执手与覆板部件及有关配套件是不是完全，电镀件、喷漆件表面色泽是不是艳丽、均匀，有无起泡、起层露底、生锈、氧化痕迹及破损等影响漂亮的缺陷。

4、还要看钥匙是不是平坦光洁，其上面的商标应明晰、规矩。

钥匙刺进锁芯孔敞开门锁，应畅顺、灵敏，无阻轧表象。

5、压动一下门锁执手、旋转反锁旋钮，看其敞开是不是灵敏。

可将门锁稳妥，稳妥后看其是不是有用，主张每把锁比较少试三次以上。

查看门锁的锁舌伸出长度不能过短。

6、要查看商品外包装文字图画是否明晰，并标示商品名称、类型、商标、出产公司名称及具体地址、出产日期等等。

另外包装盒中还附有商品合格证及说明书。

7、 门锁在装置好后要查看翻开与封闭门锁时的噪音是不是过大；在门封闭时推进门是不是有晃动的现象；门锁的锁舌是不是伸出太长或许太短；门锁的前后面板是不是平衡；在门锁封闭状况时，拉动门锁的执手时，门是不是晃动。

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.

Because 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.

The 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.

The 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.

It 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.

The 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.

7. 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.