Locks are the most important security component of ordinary households. Nowadays, there are more and more cases of picking and stealing locks, and everyone pays more attention to locks. However, when faced with all kinds of locks, many purchasers are frustrated, because these locks are either expensive or of poor quality. So, how can we pick a lock that is safe, easy to use, and durable? The professor reminds you to focus on the following key points:
The lock materials on the market are basically divided into stainless steel, copper, zinc alloy, iron steel and aluminum. Stainless steel has good strength, strong corrosion resistance, and unchanged color, which is the best material for making locks; copper is more versatile, mechanical properties are superior, and the price is more expensive; high-quality zinc alloy is strong and wear-resistant, and corrosion-resistant is very strong, simple Forming, usually used to make mid-range locks.
Look at the appearance
The usual surface treatments include electroplating, spraying and coloring. After these surface treatments, a protective film can be formed on the product, which has anti-corrosion and anti-rust effects, and makes the product more beautiful and useful, and can directly measure the quality of the product. Bad. Good quality locks are usually treated by electroplating, the coating is moderate, very uniform, and the color is bright, without bubbles, rust and oxidation marks.
Look at the functional description and key components
There are many types of locks, and the choice of lock depends on where it is used. Big brands with high quality requirements have detailed product categories for different functional requirements, such as passage locks, bathhouse locks, storage room locks, and door locks.
Look at norms fulfillment
Foreign countries have very strict regulations on hardware locks, so the quality of imported goods is relatively better. At present, the Ministry of Light Industry has studied some foreign standards and revised the originally implemented GB into the current increasingly high-demand QB. In order to save costs, small manufacturers do not perform according to the specifications, while large brands will perform the specifications when they produce goods.
To choose a big brand with a high reputation, good quality, and a long history, small manufacturers often sell directly through some agents or shops, without the strength and stable system network for after-sales service.
It should be based on one’s economic ability and practical use. Different locks are described about different houses and doors. The demand for villa and apartment locks is higher, and the price is also high. However, ordinary residences do not need to use such expensive locks. Usually, the entrance door is made of stainless steel or copper. The high-quality zinc alloy lock with thick depiction, and the high-quality zinc alloy for the door lock is beautiful and economical.
To weigh the weight, compare the feel and listen to the sound. This is the same reason as the water tap. It also claims that stainless steel, pure copper or zinc alloy, some small brands will cut corners and use hollow materials and defective materials to make them. Such materials are very light to handle and feel bad. , The sound is very muffled; the opposite is true for good locks.