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See Chinese contents: GB/T 20801.6-2020 GB/T 20801.6-2020: Pressure piping code - Industrial piping - Part 6: Safeguarding
This Part of GB/T 20801 specifies the basic requirements for safety protection devices, such as safety relief devices, flame arresters, fire emergency block valves and mechanical interlocking devices, of the pressure piping system, and safety protection. For other safety protection requirements, which are not specified in this Part, refer to other parts of GB/T 20801 and the provisions of relevant national regulations, standards and specifications.
