NB/T 20006.3-2021 Alloy Steels for Pressurized Water Reactor Nuclear Power Plants Part 3: Manganese-Nickel-Molybdenum Steel Forgings for Reactor Pressure Vessel Transitions and Flanges (English Version)
2021NB/T 20006.3-2021 Alloy Steels for Pressurized Water Reactor Nuclear Power Plants Part 3: Manganese-Nickel-Molybdenum Steel Forgings for Reactor Pressure Vessel Transitions and Flanges
2011NB/T 20006.3-2011 Alloy steel for pressurized water reactor nuclear power plants.Part 3:Mn-Ni-Mo steel forgings for transition rings and flanges of reactor pressure vessels