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China's high pressure valve quality is low, it depends on imports

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China's high pressure valve quality is low, it depends on imports


In China's current valve market, high pressure valves still need to rely on imports, except for low pressure valves that are acceptable to the international market. Under the situation that the macro economy continues to be optimistic, most of the production and sales indicators of the valve industry have maintained rapid growth, but due to the price war, the industry's sales revenue and profits have dropped significantly compared with the same period last year. With the recovery of the world economy, the import and export of valve products in China has also increased. However, due to the large gap in high-end technology compared with foreign manufacturers, product technology will become a constraint on the development of valve products in China in the future. bottleneck. Valves are indispensable fluid control equipment for various sectors of the national economy such as petroleum, chemical, power station, long-distance pipeline, shipbuilding, nuclear industry, various cryogenic engineering, aerospace and marine oil recovery. After years of development, China's valve enterprises rank first in the world, with more than 6,000 valve companies of various sizes, of which 900 have an annual output value of more than 5 million yuan. BR from the product situation, China's valve industry has been able to produce more than a dozen major categories of products, such as gate valves, globe valves, ball valves, butterfly valves, safety valves, check valves, throttle valves, plug valves, pressure reducing valves, diaphragm valves , steam traps, emergency shut-off valves, etc., the maximum operating temperature of 570 ° C, the lowest is -196 ° C, the highest pressure is 600 MPa, the maximum diameter of 5350 mm. In addition, according to the statistics of relevant departments, the annual turnover of the valve market in China is as high as 50 billion yuan, of which more than 10 billion yuan is occupied by foreign valve companies. At present, there are still some problems in China's valve industry. For example, China's valve enterprises mainly focus on low-level, small-scale, family-run enterprises. In the product, due to repeated investment and insufficient technology introduction, the leading products of China's valve enterprises are still low-quality mass products. At present, various valves produced by Chinese enterprises generally have shortcomings such as leakage, internal leakage, low appearance quality, short life, inflexible operation, and unreliable valve electric devices and pneumatic devices. Some products are only equivalent to the early 1980s. At the international level, some valves required for high temperature and high pressure and critical equipment are still dependent on imports. In addition, China's valve industry has a large gap with foreign companies in the industrial structure, the industrial chain of the valve industry, and the degree of specialization of the industry. The reason for the low quality of domestic valve products is that due to the rapid expansion of the market, the original state-owned valve enterprises have shut down and turned. Although a number of township and village enterprises have developed rapidly, due to the low starting point of township and village enterprises, the technical strength is very weak, and the equipment is rudimentary. Most of them are imitative production, especially the low pressure valves for water supply and drainage.