According to the actual situation of our country, the relevant departments of our country have drawn up and issued the inspection standard for LNG valves. At the end of last century, China formulated and issued the industry standard of low temperature valve JB/T 7746-1995. Later, with the continuous progress and development of related technologies in China, China formulated and issued the national standard GB/ t24925-2010 for liquefied natural gas valves in August, 2010, which made relatively detailed provisions on terms, technical requirements, structural types, inspection rules and test methods of low-temperature valves. This standard can be said to be applicable to many liquefied natural gas ball valve products, such as globe valves, cryogenic gate valves, ball valves, check valves, butterfly valves, etc. The applicable temperature range is from -196 ° c to -50 ° c, which should be said to include the inspection and test temperature of liquefied natural gas valves.

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