This standard defines commonly used abbreviations for petrochemical piping engineering. This standard is applicable to petrochemical process equipment (unit) piping projects, and other piping projects can be used as a reference.
SH/T 3902-2004 history
2014SH/T 3902-2014 Abbreviations of piping engineering in petrochemical industry
2004SH/T 3902-2004 Abbreviation of piping engineering in petrochemical industry