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See Chinese contents: GB/T 9251-2022 GB/T 9251-2022: Methods for hydrostatic test of gas cylinders
This document specifies the basic requirements for hydrostatic test methods and devices of gas cylinders. This document is applicable to the hydrostatic test of gas cylinders whose nominal working pressure is not more than 70MPa (gauge pressure, the same below). This document does not apply to gas cylinders filled with solid fillers.
