NB/T 20008.13-2019 Other materials for pressurized water reactor nuclear power plants Part 13: Class 1, 2, 3 studs, bolts, screws, threaded rods and nuts (English Version)
2019NB/T 20008.13-2019 Other materials for pressurized water reactor nuclear power plants Part 13: Class 1, 2, 3 studs, bolts, screws, threaded rods and nuts
2013NB/T 20008.13-2013 Other material for pressurized water reactor power plants.Part 13: Class 1, 2, 3 studs, bolts, screws, threaded rods and nuts