In recent years, China's hardware lock industry has developed at a rate of 15% per year, with an annual output value of more than 180 billion yuan and exports of more than 8 billion US dollars. It accounts for about one-third of China's total light industry exports, ranking the top three in light industry. At present, there are more than 1,400 lock-up enterprises registered in China, mainly small and medium-sized enterprises, mostly individual and private enterprises, which are basically labor-intensive industries. China's hardware lock industry is also facing fierce market competition. Especially in the context of the financial crisis and the economic crisis sweeping the world, the market competition is fierce, and the price competition is more violent. How do small and medium-sized enterprises in the hardware lock industry find a way out?
The industry believes that poor brand awareness is a common phenomenon in China's lock industry, which has an important relationship with the industry's more special development experience. In fact, China's padlock production has a long history like other traditional industries. In the era of planned economy, there are 270 padlock production enterprises in China, many of which have a century-old brand. At that time, both the design level, the advanced equipment and the quality of personnel are comparable to those of advanced countries, and there are many advanced designs and good quality. product. In the past 20 years, after a few changes, only one company has survived. The "Three Rings" padlock with more than 70 years of history is the only product with its own brand in its export products, and another old brand has already been "sold" to foreign investors. All other domestically-made padlocks that are active in the market today are newly established private companies since the reform and opening up, and their founders are almost all farmers who turn from land to industry. Many lock companies are in the process of “selling the first bucket of gold†and have no time to consider cultivating brands. Short, low starting point, compared with foreign brands with a hundred years of history, China's young brands are naturally "insufficient."
Poor brand awareness has constrained the development of the industry. First of all, the scientific and technological content, quality and price of China's lock products are significantly lower than the advanced level of developed countries. According to reports, the most direct manifestation of poor brand awareness is the lack of investment in design and development, purchase of advanced equipment and molds, training of professionals and after-sales service. Shi Lanlan said that the lock industry is not only a traditional industry, but also has a close relationship with high technology. A lock seems simple, but it can be completed after 110 processes, only with advanced design level and equipment, high-quality professional Only in order to produce high value-added products. For example, the same raw materials, the quality of the products processed by using different equipment and molds is completely different.
The lock industry should strengthen brand building and continue to move toward brand development.
One of the most important quality indicators of the lock product is the mutual opening rate of the product, that is, the same key can open several locks, and the same lock can open the probability with several keys. At present, the world's well-known brand locks open rate is only tens of thousands of points. The mutual opening rate of domestically-made locks is also about 6,000. However, some informal and non-production strength lock manufacturers produce 30%. One, the safety and reliability of such a lock is too bad. In addition, the hardware lock market has disorderly competition, the quality of the products is poor, the technology content of the hardware lock industry is not very high, and the homogenization phenomenon is very serious.
Hexagon Bolt refers to the fastener composed of head and screw. According to the material, the bolt can be divided into iron bolt and stainless steel bolt, namely hexagon head bolt (partial thread) - C grade and hexagon head bolt (full thread) - C grade.
1. According to the stress mode of the connection, there are common and reamed holes. The bolts used for reaming holes should match the size of the holes and be used when subjected to transverse force
2. According to the head shape, there are hexagon head, round head, square head, countersunk head and so on. Generally, countersunk head is used in the place where the surface is smooth and no protrusion is required after connection, because countersunk head can be screwed into parts. Round head can also be screwed into parts. The tightening force of square head can be larger, but the size is large. Hexagon head is the most commonly used.
In addition, in order to meet the needs of locking after installation, there are holes in the head and in the rod, which can prevent the bolts from loosening when they are subject to vibration.
Some bolts have no thread of smooth rod to do thin, called thin waist bolt. This kind of bolt is conducive to variable force connection.
There are special high strength bolts on the steel structure. The head will be bigger. The size will also change.
In addition, there are special uses: T-shaped slot bolts, most of which are used in machine tool fixtures, with special shape, and both sides of the head need to be cut off. Anchor bolts are used to connect the machine and the ground, and there are many shapes, such as U-shaped bolts, and so on.
There are also special studs for welding, one with thread and the other without thread, which can be welded on the parts, and the other side can directly screw the nut.
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