wholesale stainless steel spherical lock indoor bedroom door lock bathroom spherical lock

center distance: refers to the distance from the center of the hole (center of the circle) to the door edge. the conventional center distance is 60mm and 70mm.

method 1: the center of the door hole (big hole), that is, the vertical distance from the heart of the lock to the door edge is 60mm, and the bolt is short, that is, the center distance is 60mm,

if it is 70mm, take a long bolt, that is, the center distance is 70mm;

method 2: the total length of the bolt is 5cm, which is a short bolt, that is, the center distance is 60mm,

the total length of the bolt is 6cm, which is long, that is, the center distance is 70mm;

method 3: the length of the bolt cylinder is 3cm, which is a short bolt, that is, the center distance is 60mm,

the length of the bolt cylinder is 4cm, which is the length of the bolt, that is, the center distance is 70mm.

if there is no hole in the door, choose it casually; if there is a hole in the door, choose the same as before.

 
the following is bk lock, that is, keyless type, without key type: any hard thing (such as a slotted screwdriver) that can be inserted into the lock core hole and rotated can be used as a key to unlock

company introduction:

haiyinhao hardware co., ltd. was established in 2015 with a registered capital of 1 million. before that, it operated for several years in shanghai jiuxing market, a national civilized and honest market. the company mainly distributes and wholesales all kinds of locks, door and window hardware, hardware tools and so on, and has established long-term and stable cooperative relations with many wholesalers, retailers and agents by means of various operating characteristics and small profits but quick turnover, the products sell well in the consumer market and enjoy a high status among consumers. the company attaches great importance to credit, keeps contracts and guarantees product quality, and has won the trust and praise of our customers. over the years, thanks to the support and love of new and old customers. on the way to the future, we welcome more sincere partners to join hands and create a win-win situation!

company homepage:https://shop1440780597449.1688.com