1 Scope
This Standard specifies content and method of industrial valve markings.
This Standard is applicable to industrial metal valves. In case of any inconsistency between the valve product standard and this Standard, the former shall prevail.
Other valves may also refer to the provisions of this Standard.
2 Normative References
The following referenced documents are indispensable for the application of this Standard. For dated references, only the dated edition is applicable to this Standard. For undated references, the latest edition (including any amendments) applies.
GB/T 1047 Pipework Components--Definition and Selection of DN (Nominal dimension) (GB/T 1047-2005, ISO 6708: 1995, MOD)
GB/T 1048 Pipework Components-Definition and Selection of PN (GB/T 1048-2005, ISO/CD 7268: 1996, MOD)
GB/T 7306 (All Parts) Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints Are Made on the Threads(GB/T 7306.1~7306.2-2000, eqv ISO 7-1:1994)
GB/T 7307 Pipe Threads with 55 Degree Thread Angle where Pressure-tight Joints are Not Made on the Threads (GB/T 7307-2001, eqv ISO 228-1:1994)
GB/T 9113 Integral Steel Pipe Flanges
GB/T 12716 Pipe Threads with the Thread Angle of 60 Degrees Where Pressure-Tight Joints Are Made on Threads
3 Marking Contents
