
Alloy steel for pressurized water reactor nuclear power plants-Part 18: Mn-Ni-Mo alloy steel forgings for closure heads of reactor pressure vessel
标准号:NB/T 20006.18-2019E
Alloy steel for pressurized water reactor nuclear power plants-Part 18: Mn-Ni-Mo alloy steel forgings for closure heads of reactor pressure vessel
标准号:NB/T 20006.18-2019E