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See Chinese contents: GB/T 12243-2005 GB/T 12243-2005: Spring loaded safety valves
This standard specifies the design, material, structure, performance, test inspection, marking, lead sealing, and delivery of spring loaded safety valves. This standard is applicable to steam boilers of which the set-pressure is 0.1 MPa~42.0 MPa, the runner diameter is greater than or equal to 8mm; pressure vessels and pipe safety valves.
