2023/12/22 08:56

Ministry of Industry and Information Technology issued five valve-related industry standards

On October 29, the Ministry of Industry and Information Technology (MIIT) released the Announcement of the Ministry of Industry and Information Technology of the People's Republic of China (No. 63, 2015) on its official website. It said that the Ministry of Industry and Information Technology approved 902 industry standards such as "Small and Medium-sized Axial Submersible Electric Pumps" (see Annex 1 for the standard number, name, main content and starting date of implementation), of which 648 are standards for the machinery industry, 13 are standards for the automotive industry, 24 are standards for the aviation industry, 20 are standards for the shipbuilding industry, 48 are standards for the light industry, 9 are standards for the chemical industry, and 19 are standards for the metallurgical industry, Building materials industry standards 3, 2 non-ferrous metal industry standards, 5 rare earth industry standards, 60 electronics industry standards, 51 communications industry standards. Among them, a total of 5 standards related to the valve and safety relief device industry. The standard release date is October 10, 2015, the implementation date are March 1, 2016. The above mechanical industry standards are published by the Machinery Industry Press.

These 5 are JB/T 8527-2015 "Metal Sealed Butterfly Valve" which replaces JB/T 8527-1997, which stipulates the terminology and definition of metal sealed butterfly valve, structural type, model number and parameters, requirements, tests, inspection rules, marking, packaging, storage and shipment requirements. It is mainly applicable to metal-sealed butterfly valves with flange, butt-clamp and welded connections with nominal pressure of PN2.5~PN160 and Class 150 to Class 900, nominal size of DN50~DN6000 and temperature of -29℃-538℃.

JB/T 12386-2015 "water pipeline inlet and exhaust valve" provides for the terms and definitions of the water pipeline inlet and exhaust valve, model and structure type, technical requirements, test methods, performance tests, inspection rules, signs, packaging and storage and transportation. Mainly applicable to nominal size DN15 ~ DN25, nominal pressure is not greater than PN25 micro inlet and exhaust valve; DN25 ~ DN300, nominal pressure is not greater than PN25 rapid inlet and exhaust valve and combined rapid inlet and exhaust valve; medium water temperature 0 ℃ ~ 65 ℃.

JB/T 12387-2015 "high temperature and high pressure ball valves for power stations" specifies the structural type and model of high temperature and high pressure ball valves for power stations, technical requirements, materials, quality control requirements, test methods, inspection rules, marking, protection, packaging, transportation and storage, ordering requirements. Mainly applicable to the nominal size DN15 ~ DN100 (NPS1/2 ~ NPS4), the pressure level is not greater than PN760 (class4500), the media applicable temperature is not greater than 620 ℃, the medium is water, steam, high temperature, high pressure ball valves for thermal power plants.

JB/T 12746-2015 "containing defective high temperature pressure pipelines and valves safety assessment method" mainly stipulates the terminology of the defective high temperature pressure pipelines and valves safety assessment method, general introduction, safety assessment process and basic steps, elastic stress analysis, exempt from the judgment of creep failure analysis, the calculation of the reference stress and the stress intensity factor, the calculation of the enduring fracture life, the calculation of the creep crack extension The evaluation process, evaluation conclusions and reports are refined. It is mainly applicable to the safety assessment of crack-like plane defects detected in pressure pipelines and valves under the category of high-temperature creep, and determines whether the cracked plane defects of the assessed object will expand to an unacceptable extent under the given loading conditions and expected service life.

B/T 12526-2015 "Industrial Valves Plunger Valves" specifies the structural type, technical requirements, materials, test methods, inspection rules, marking, packaging, transportation, storage of plunger valves. Mainly applicable to the nominal pressure PN10 ~ PN40, nominal size DN15 ~ DN300, operating temperature 1 ℃ ~ 300 ℃, the working medium for steam, gas and other non-corrosive media industrial plunger valve.

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