This standard stipulates the contents and requirements for the operation, maintenance and inspection of general valves in oil and gas pipelines, and lists the judgments of common faults. This standard applies to general valves for oil and gas pipelines.
SY/T 6470-2000 history
2011SY/T 6470-2011 Regulation for operation maintenance repair of general purpose valve in oil and gas pipeline
2000SY/T 6470-2000 Code for operation maintenance repair of general purpose valve in oil and gas pipeline