The development cycle of China's valve industry, product lifecycle (product lifecycle), is the market life of a product, that is, the entire process of a new product from entering the market to being eliminated by the market. Initial development stage (1949-1973): The '2016-2020 China Valve Industry Investment Analysis and Prospect Forecast Report' issued by China Investment Consultants stated that after liberation, my country's valve industry has developed rapidly. 1956 mass production of high and medium pressure valves. The rapid development of the chemical industry and the petroleum industry has greatly promoted the development of the valve industry and the improvement of the technical level. In 1961, mass production of high-pressure forged steel valves was started, and soon the design force of the valve industry was concentrated, and the combination of high, medium and low pressure valves was launched. Design, reform the backward production technology, start to get rid of the backward situation of preventing foreign valve products, and cultivate a group of professional valve design talents. Standardization stage (1973-2003): Since 1973, we have vigorously carried out the three kinds of valves (standardization, serialization, generalization) work, adopting domestic and foreign advanced technology, to select and design the various types of valves produced. Later, the public relations work on key technical issues of the valve was carried out, and at the same time, the valve performance test base and experimental research center were established. At that time, my country's valve industry already had a considerable scale, with professional manufacturers of high, medium and low pressure valves all over the country. Growth stage (2004-2008): In China’s valve market, except for low-pressure valves that have reached a level acceptable to the international market, foreign customers rarely accept high- and medium-pressure valves from China, while Chinese engineering projects require High-pressure valves also rely on imports. With the continuous development of science and technology, the domestic valve product market is also developing in the direction of high technology content, high parameters, strong corrosion resistance and long life. Various valve manufacturers have begun to vigorously develop high-end technical valve products. Since 2009: China's valve industry has formed a large market scale and entered a mature period. The development status of China's valve industry In the development of the national economy, the valve industry, as an important part of the machinery and equipment manufacturing industry, plays a very important role. Valves are used in important areas related to the national economy and people’s livelihood, such as large-scale clean and high-efficiency power generation, ultra-supercritical thermal power, gas steam cycle, large ships, large chemical ships, aircraft carriers, CNG, atmospheric treatment, urban industrial wastewater treatment, urban pipeline network transformation, etc. There is a lot of demand. Therefore, my country attaches great importance to the valve industry and is committed to making China a major production base for global valves. During the 'Eleventh Five-Year Plan' period, the National Development and Reform Commission and other relevant national departments put forward the 'Striving to gradually realize the localization of major equipment valves. Through the introduction of key technologies and independent development, preferential laws and policies are given. By the end of the 'Eleventh Five-Year Plan' period, the localization rate of valve products on large-scale ethylene special valves will reach 95-100%; the special valves for coal chemical industry are mainly used for high-temperature hydrogenation and the key to solving material sealing pairs, and some control drive devices have reached 90%. In terms of ultra-supercritical thermal power plant technology, the proportion of valve localization should reach 80%-100%; the localization of the valve industry has made gratifying progress. The 2016-2020 China Valve Industry Investment Analysis and Prospect Forecast Report issued by China Investment Consultants stated that during the “Twelfth Five-Year Plan” period, my country’s valve industry has achieved considerable development. In 2015, there were 1,806 enterprises above designated size (companies with annual sales revenue of more than 20 million yuan). The total assets were 194.8 billion yuan, a year-on-year increase of 2.01%; the production of valves was 9,941,100 tons, a year-on-year increase of 1.32%; the main business income was 256.6 billion yuan, a year-on-year increase of -0.47%; the total profit was 17.2 billion yuan, a year-on-year increase of -5.78%; The profit margin is 6.7%; the valve product price index is 98.5%; the completed export delivery value is 34.4 billion yuan, an increase of -8.58%. Through the introduction of technology, digestion and absorption, independent development, and technological transformation, the entire industry has generally improved the level of product development, design and manufacturing. At present, it has produced more than 3000 models and more than 40,000 specifications of valve products. Parameter range: nominal size from DN3 to 8000mm; pressure from vacuum to 600MPa; temperature from cryogenic -196℃ to high temperature 1200℃; varieties include gate valve, globe valve, throttle valve, plug valve, ball valve, butterfly valve, diaphragm valve, stop Return valves, safety valve
s, pressure reducing valves, traps and regulating valves, etc., total 12 categories. The overall level has reached the level of international moderately developed countries, and a few products have reached or approached the international advanced level. Testing methods and test conditions for conventional valves are available; test benches for individual special valves, such as high-temperature tests, ultra-low temperature tests, and full-performance test benches for safety valves for nuclear power plants (steam displacement 660T/h) have also been built.
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