The Internet of Things can penetrate all aspects of daily life. Therefore, the degree of development of a country's Internet of Things can directly reflect the country's economic strength. At present, the research and promotion of related technologies of the Internet of Things has become the focus of competition among countries. The Internet of Things mainly involves three major fields: sensors, electronic tags, chips and smart cards. RFID is one of the most critical technologies in the development and marketing of sensor networks. RFID technology combines existing networks, databases and other technologies to build a huge Internet of Things system consisting of a large number of networked readers and electronic tags, even larger than the Internet. In this sense, RFID technology is undoubtedly The "leaders" of the development of networking. In China, RFID technology is favored by the government and has good market prospects. Localized enterprises account for the advantages of “time and place and peopleâ€. At the same time, in recent years, they have also attracted a large number of foreign companies to develop technology and open up markets in China. Nevertheless, the cost issue of popularizing RFID technology into daily life is still a difficult problem that restricts the large-scale development of the Internet of Things. The impact of RFID costs on small and medium-sized suppliers is most obvious. For suppliers, regardless of the value of the goods, they must be equipped with corresponding electronic tags, such as a computer and a toothbrush, the price gap is very different, but the additional electronic tags are the same, then the number is large, the value is low The goods that are paid will be huge expenses that are inconsistent with the value. With the advancement of technology, the cost of RFID tags is slowly declining. Many Chinese high-frequency RFID tags have fallen below one dollar, which has alleviated the market downturn caused by high costs. However, the cost of RFID cards is not the only cost component, and the cost of wireless infrastructure required to popularize RFID technology will be much higher than RFID tags. CMIC research believes that the cost of RFID technology will not decline significantly in the next few years. There are also some opinions in the industry on how to reduce costs, such as "the value of RFID is proportional to the number of times it is used", which is based on the value characteristics of RFID. This conclusion is that if the electronic tag is used in the same RFID technology application system, the more functions the reader uses, the higher the cost is decomposed, diluted and recognized. Conversely, the shorter the value chain is designed, or the less the value is expressed, the more prominent the cost problem. According to this conclusion, increasing the frequency of use of electronic tags can be a shortcut to reduce the cost of RFID.
Blind Flanges are manufactured without a bore and used to blank off the ends of piping, Valves and pressure vessel openings.
From the standpoint of internal pressure and bolt loading, blind flanges, particularly in the larger sizes, are the most highly stressed flange types.
However, most of these stresses are bending types near the center, and since there is no standard inside diameter, these flanges are suitable for higher pressure temperature applications.
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