the emergence of anti-theft door locks has become a security guarantee for the privacy of thousands of households. Especially the entrance door, its safety is the focus of purchase and consideration. The lock core of the security door is the most important one. So, what security door lock core is good? Next, let's bring you a good introduction about the lock cylinder of the security door. Let's take a look at it, hoping to help you.

first, what kind of security door lock cylinder is good

1. Doric: Doric is a sub-brand of the international commercial brand E-MARKS Group. The technical strength comes from the professional knowledge and system theory of DHI members of American hardware professional organization. The price of anti-theft door locks is generally around 2 yuan.

2. Qunsheng: China Qunsheng Group's dedicated brand is committed to building a global hardware operator, a well-known trademark in China, a leading brand in the industry, a large-scale residential supplier and a drafting unit of national environmental protection standards.

3. Xinduo: people-oriented, quality first, operating in good faith in China, with brands of Xindu Group Co., Ltd., China famous trademark, top ten brands of security doors, Zhejiang famous trademark and Zhejiang Yongkang.

4. Meribao: Zhejiang Meribao Lock Industry Co., Ltd. is a professional lock core manufacturing enterprise integrating R&D, production and sales. The design and production of its super class B lock have a high response in the domestic market. The price of general anti-theft door locks is about 8-2 yuan.

5. Panpan: This company was established in 199s, and it is the representative of China security door industry. Xiaobian is listening to "Pan Pan arrives home, lives and works" to grow up.

6. Steven: the famous core brand of anti-theft door lock in Europe, which occupies a large part of the European mainland market. The development of this logo is the guiding principle of the industry. Products focus on the high-end market, and the price of pure copper lock core for security doors is generally around 5 yuan.

second, the anti-theft door lock core selection skills

1. Choose two lock cores on the security door, one with a specific gravity of two. The heavier the weight, the better the quality of the lock core. The more beads in the lock core, the better the anti-theft function.

2. Look at the "teeth" of the safety door key. The more teeth, the deeper the teeth, the more complicated the arrangement, the more difficult it is to open, and the better the anti-theft performance. The standard lock cylinder can be upgraded and replaced with a non-brand standard type within the permitted length range. Non-standard lock cores should also be upgraded and replaced with original products or corresponding models of different brands. It cannot be upgraded directly with the standard lock cylinder.

3. Choose the lock core of the safety door to see the color, compare the color and design to see the work. The quality of the lock core is electroplated, with smooth surface and bright color. Among them, the color is dark yellow, the copper core is strong, the anti-theft performance is good, the lock core is dim, the color is gray, the foam is zinc alloy, and the anti-theft performance is good and general.

4. Insert the safety door key into the lock cylinder. The anti-theft performance of the card is very poor. After the key is half inserted, use 5 to 7 minutes to rotate clockwise or counterclockwise, and then continue to press the key to enter the lock. The key of the card represents the lock cylinder. Poor performance, smooth insertion into the lock core in a semi-rotating state, and good anti-theft effect.

that's what we've brought to you about a good lock cylinder for security doors.