2017NB/T 20005.7-2017 Carbon and low alloy steels for pressurized water reactor nuclear power plants - Part 7: Grade 1, 2, 3 steel plates
2010NB/T 20005.7-2010 Carbon steel and low alloy steel for pressurized water reactor nuclear power plants-Part 7: Class 1,2,3 plates
1999EJ/T 1103-1999 Pressurized water reactor nuclear power plants 20MnHR steel plates for class 2,3 equipments
EJ/T 1103-1999 Pressurized water reactor nuclear power plants 20MnHR steel plates for class 2,3 equipments was changed to NB/T 20005.7-2010 Carbon steel and low alloy steel for pressurized water reactor nuclear power plants-Part 7: Class 1,2,3 plates .