China's valve industry has experienced decades of development. According to the National Bureau of Statistics 2009 statistical data shows, China's valve manufacturing industry enterprises above the scale of a total of more than 1700, the production of valves 3260000 tons, total industrial output value of 114700000000 yuan, total profit of 6390000000 yuan. At the same time, the valve standard has also been considerable development. By the end of 2009, the national standard valve by the National Standardization Committee under the valve 43, machinery industry standard 98. Consists of basic standards, methods, standards, standard parts standard, material standard, the five part of China's valve standard system has also been established.
In twentieth Century five, sixty time, initial work of China's valve standard start, making is simple and standard JB93-59 "handle" and JB308-62 "valve model establishment method" etc..
After the 80's, along with the strengthening of China's standardization work, the valve standard has been rapid development. This period of time to formulate standards including basic standards, product standards, standards and methods of standard material. The standard range, wide coverage, and many standards adopted international standards and advanced foreign standards.
In 90, the valve standard from basic, universal mainly to include all kinds of product standard, method and standard, the standard number exceeds 100.
After 2000, progress in the standardization work has substantial. First on the older the normal revision; secondly, the development of China's valve standards a large number of adoption of international standards and advanced foreign standards; at the same time also made a lot of meeting the needs of the market and reflect the new technology of valve standards. During this period the revision of valve standards more than 80, the standard number reached more than 140, thus forming a valve standard system in china.
In twentieth Century five, sixty time, initial work of China's valve standard start, making is simple and standard JB93-59 "handle" and JB308-62 "valve model establishment method" etc..
After the 80's, along with the strengthening of China's standardization work, the valve standard has been rapid development. This period of time to formulate standards including basic standards, product standards, standards and methods of standard material. The standard range, wide coverage, and many standards adopted international standards and advanced foreign standards.
In 90, the valve standard from basic, universal mainly to include all kinds of product standard, method and standard, the standard number exceeds 100.
After 2000, progress in the standardization work has substantial. First on the older the normal revision; secondly, the development of China's valve standards a large number of adoption of international standards and advanced foreign standards; at the same time also made a lot of meeting the needs of the market and reflect the new technology of valve standards. During this period the revision of valve standards more than 80, the standard number reached more than 140, thus forming a valve standard system in china.