A steel for welding includes steel components in which P CTOD is less than or equal to 0.065%, CeqH is less than or equal to 0.225%, FB is greater than or equal to 0.0003%, and Bp is 0.09% to 0.30%. In the steel for welding, in a thickness center portion of a cross-section in a thickness direction, the number of oxide particles having an equivalent circle diameter of 2 µm or greater is less than or equal to 20 particles/mm 2 and the number of Ti oxides having an equivalent circle diameter of 0.05 µm to 0.5 µm is 1.0×10 3 particles/mm 2 to 1.0×10 5 particles/mm 2 .