NB/T 20008.26-2017.other material for pressurized water reactor nuclear power plants Part 26: spheroidal graphite cast iron used for control rod drive mechanism.NB/T 20008.26规定了压水堆核电厂控制棒驱动机构用QT400-18、QT550-6球墨铸铁件的制造、检验和验收等要求。
NB/T 20008.26适用于压水堆核电厂控制棒驱动机构磁轭用QT400-18、QT550-6球墨铸铁件...................
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