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See Chinese contents: GB/T 18443.7-2010 GB/T 18443.7-2010: Testing method of performance for vacuum insulation cryogenic equipment -- Part 7: Holding time measurement
This Part of GB/T 18443 specifies test principles and methods, test devices, equipment and instruments, test conditions and test preparation, test procedures, data processing and test record and test report for holding time measurement of vacuum insulation cryogenic equipment. This Part applies to the holding time measurement of vacuum insulation cryogenic equipment such as vacuum insulation cryogenic pressure vessels, vacuum insulation cryogenic welding gas cylinders, except the liquid hydrogen storing and transporting equipment.
