NB/T 20008.11-2013
压水堆核电厂用其他材料.第11部分:S1、 S2级销轴、拉杆和支承螺栓用锻、轧棒
Other material for pressrized water reactor nuclear power plant.Part 11: Rolled or forged bars for the manufacture of Class S1 and S2 shafts, tie-rods and support bolts
NBT20008.11-2013, NB20008.11-2013