System for producing steel castings

To provide a system for producing steel castings that is simple and suitable to continuously produce many small steel castings. A system 1 comprises multiple furnaces 10 that are aligned and hold molten metal for cast steel, a pouring machine 20 that has a ladle 30 that receives the molten metal from the furnaces, wherein the pouring machine travels in parallel to a line of the furnaces and pours the molten metal into a mold 70 by tilting the ladle, a line 60 for conveying the molds that intermittently conveys molds that are aligned in parallel to a direction in which the pouring machine travels, wherein the line is located on the opposite side of the furnaces across the pouring machine, and a temperature sensor 38 that measures a temperature of the molten metal so as to generate an alarm if the temperature is low.