2019DL 5190.5-2019 Construction Technical Specifications for Electric Power Construction Part 5: Piping and Systems
2012DL 5190.5-2012 Technical specification for thermal power erection and construction - Part 5: Piping and system
1994DL/T 5031-1994 Technical code for erection and acceptance of electric power construction (piping section)
DL 5190.5-2012 Technical specification for thermal power erection and construction - Part 5: Piping and system has been changed from DL/T 5031-1994 Technical code for erection and acceptance of electric power construction (piping section).