本部分适用于非多孔性金属材料制承压设备在制造、安装及使用中产生的表面开口缺陷的检测。

本部分适用于在制和在用承压设备用导电性金属材料管材、零部件、焊接接头表面及近表面缺陷的涡流检测，适用于金属基体表面覆盖层厚度的磁性法和涡流法测量。

本部分适用于金属材料制承压设备用原材料或零部件和焊接接头的超声检测，也适用于金属材料制在用承压设备的超声检测。

本标准适用于架空输电线路用钢芯软铝绞线。

NB/T 20259.4-2014.Code of valuation on bill of quantities of nuclear power plant construction works-Part4: Ventilation and air-conditioning. 1范围 NB/T

NB/T 20259.4-2014.Code of valuation on bill of quantities of nuclear power plant construction works-Part4: Ventilation and air-conditioning. 1范围 NB/T

NB/T 20259.4-2014.Code of valuation on bill of quantities of nuclear power plant construction works-Part4: Ventilation and air-conditioning. 1范围 NB/T

NB/T 20261-2014.Design criteria for emergency core cooling system of pressurized water reactor nuclear powcr plants. 1范围 NB/T 20261规定了二代改进型乐水堆核电厂应急堆芯冷

NB/T 20262-2014.Design criteria for steam generator blowdown system of pressurized water reactor nuclear power plants. 1范围 NB/T 20262规定了压水堆核电厂蒸汽发生器排污系

NB/T 20269-2014.Design and fabrication specification for reactor coolant pump of pressurized water ractor nuclear power plant. 1范围 NB/T 20269规定了压水堆核电厂