NB/T 20009.5-2013
压水堆核电厂用焊接材料.第5部分:1、 2、3级设备用碳钢气体保护电弧焊药芯焊丝
Welding material for pressurized water reactor nuclear power plants.Part 5: Carbon steel flux cored electrodes for gas shielded arc welding of class 1, 2, 3 components
NBT20009.5-2013, NB20009.5-2013