GB/T 17213 is applicable to various types of industrial process control valves (hereinafter referred to as control valves). Part 1 of this series of standards gives some basic terms, and at the same time explains the requirements for using other parts of GB/T17213.
GB/T 17213.1-1998 history
2016GB/T 17213.1-2015 Industrial process control valves - Part 1: Terminology and general principles for control valves
1998GB/T 17213.1-1998 Industrial-process control valves. Part 1: Control valve terminology and general considerations