Xiaobian checked the information and China has become the world's largest producer and consumer of locks. The domestic lock industry has annual sales of more than 40 billion yuan, and its production capacity exceeds 2 billion sets. The annual export volume exceeds 10 billion yuan. However, most of them rely on low labor costs to obtain production orders, which results in huge price differences in the lock market and uneven quality. The same appearance locks range from a few yuan to several hundred yuan.
A key to open N home locks, the same shape of the lock price from a dozen yuan to hundreds of dollars. When to change the lock and change the lock, many people may not know.
"After 5 years, the general door and the anti-theft door lock should be replaced. It is best to choose a big brand and a good quality product." Xiaobian walked around the lock market, and no one can clearly tell how to choose.
Door locks need to be changed in 3~5 years
Famous door lock industry: See if your home lock should be changed?
Chen Li, chairman and general manager of Mingmen Lock Industry, said that household door locks usually have to be replaced in 3 to 5 years, but many people are not clear, so they hope to use sales promotion to attract consumers and popularize door lock knowledge.
"General locks, such as long service life, lock cylinder aging, severe wear, it is easy to be opened by a similar tooth key." Chen Li said that many residential buildings are now installed by real estate developers, in large quantities The same brand of locks are used in the middle, and it is theoretically easy to lock multiple doors. Even for security doors, many users in a community can easily choose the same brand, leaving the same hidden dangers.
The master of Guangfu Road with the key told the reporter that many residents have neglected the shelf life of the lock, and it has been used for more than ten or twenty years. Nowadays, the general locks are all five marbles. After using them for a long time, if the two marbles in the lock are seriously worn, the locks can be easily opened when some keys are inserted corresponding to the other three marbles. He suggested that ordinary door locks should be replaced after a maximum of 5 years of use.
Class B lock core is more burglarproof
The reporter learned that the lock cores currently used on the market have three types: A-class, B-class and super-B-class. The anti-destructive opening of the A-class lock core is greater than 15 minutes, and the technical opening is more than 1 minute. The anti-destructive opening of the Class B lock should be greater than 30 minutes, and the technical opening should be greater than 5 minutes. The biggest feature of the Super B-class anti-theft door lock is that the anti-technical opening time is more than 240 minutes.
"The lock cylinder can also be identified by the number of marbles. In general, multi-row marble locks are superior to single-row marble locks. Multi-row stealth marble locks are superior to ordinary multi-row marble locks." The master told reporters that because the B-level locks are much more expensive than the A-class locks, most manufacturers on the market produce Class A locks. The public can check the key of their own security door. If it is a single row of marbles, the security door is probably installed with a Class A lock cylinder. If the public feels unsafe, they may consider replacing the Super B-class lock cylinder to improve the overall anti-theft performance of the security door.
In addition to the lock core, there are hardware accessories. “Materials are generally aluminum alloy, stainless steel and copper. The aluminum alloy is slightly worse, copper is the best, but the price of the lock is also the highest. What is important is that even if copper is used, the difference in the material of the lock is very large, and it is difficult for consumers to distinguish. The salesperson told the reporter that the only way for consumers to distinguish is the experience. The qualified locks work finer, the unqualified products look rougher, the qualified locks are very clear when opened, and the unqualified locks often have a surface. There are scratch marks, the key insertion is loose, and the opening sound is dull.
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