The wrench is a commonly used installation and disassembly tool. Usually, there are open bolts or thread openings or sleeve holes in one or two ends of the handle.Or nuts, play a great role in all walks of life.
In daily life and work, we may encounter a nail that cannot be nailed, a screw that cannot be loosened. At this time, we need a wrench to help us.The wrench is one of the most commonly used tools. It is simple and low in price, which can save us time and effort.There are many types of wrenches. Different types are suitable for different scenarios. Let me introduce the classification and use of the wrench:
1. Stupid wrench: There is a fixed -size opening at one or two ends to twist a certain size nut or bolt.
2. Plum blossom wrench: There are working ends with six -cord or twelve -corner holes at both ends, which are suitable for a small working space or cannot use ordinary wounds.
3. Dual -use wrench: one end is the same as the dumb wrench, and the other end is the same as the plum blossom wrench. The two ends can be twisted to the same specifications of bolts or nuts.
4. Live wrench: The opening width can be adjusted within a certain size range, and the bolts or nuts of different specifications can be twisted.
5. Hook -shaped wrench: also known as crescent wrench, which is used to twist the thick -limited flat nut.
6. The sleeve wrench: consists of multiple sleeves with hexagonal or twelve -corner holes with an attachment such as a handle and a rod. It is particularly suitable for bolts or nuts that are very narrow or depth of depression.
7. Inner hexagonal wrench: The L -shaped hexagonal stick wrench is mainly used to twist the inner hexagonal screw.
8. Torque wrench: Torque wrench can show the torque applied when twisting bolts or nuts, which is suitable for a clearly stipulated in the torque size.
Here are a few well -known wrench brands:
1. BOSCH Bosch Electric Tools
In China, Bosch Electric Tools provides a series of products, including hammer drills, impact drills, curve saws, electric picks, corner grinders, electric planes and sand mills.Quality, technological innovation and after -sales service have always maintained high standards.
Second, Makita Mutian
Makida professional electric tools have the characteristics of small noise, strong power, good performance, long life, light body, lightness, solid durability, easy operation, and convenient repairs. It is a must -have high -quality product for professionals or amateur DIY personnel.
Third, Atlas Copco Atlas Copper
Atlas Copper sells a variety of products in China and conducts corresponding services and market development business to provide various solutions for the achievement of sustainable productive forces.
Fourth, Dewalt won great
Dewei enjoys a prestigious design, technology and manufacturing field in durable industrial machinery, and has gained enduring good reputation among professional users: solid durability, strong skill, high accuracy, and reliable performance.
5. Dongcheng Dongcheng Electric Tools
Ensuring product quality and pursuing customer satisfaction is the primary policy of Dongcheng.In terms of quality management, from the factory of raw materials and parts to the factory inspection to the safety testing of the product factory, the entire process has professional and technical personnel strictly control to ensure that the product quality is first -class, and Dongcheng rely on excellent product performance and good market reputation.
6. Hitachikoki Hitachi workers
Hitachi Industry Group is at the forefront of electric tools. While providing customers with rich Hitachi electric tools and related products, the company also provides customers with rapid and first -class after -sales service.
7. Metabo Mai Tai Bao
Macao electric tools are safe, high -quality, and efficient worldwide. The products are exported to more than 150 countries and regions.Unremitting pursuit of quality.
Eight, Tiger Xiaomei Electric Tools
The companys products are designed with a three -dimensional computer. The parts are very high in process. It is characterized by light body, less noise, long service life, and the speed of threading parts is increased by ten than usual. The quality has reached more than the worlds advanced level.The structure is much lighter than the bulky electric board produced in the past, and the users feelings have a soft spot.
Nine, Devon
Through the efforts of the past ten years, it has formed a high popularity in the industry. With a group of loyal customer bases, there are large tools to be used in industries such as industrial and mining, shipbuilding, casting enterprises, building decoration and automobile maintenance.Now it has grown into a leading professional supplier of electric tools in the world.
10. WORX Wicker
Wickers mission in China is to provide professional electric tools with high efficiency, long life, professional quality, and performance in the Chinese market.Relying on brand strategy, scientific and technological innovation and independent research and development, Wicker has won countless international authoritative awards for many years, and has won unanimous praise and high praise from customers and end users.

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