The blast furnace, 86.3-meters high and 10.3-meters in diameter has a capacity of 20,000 metric tons. It was the most challenging part of the entire project, in terms of design and engineering requirements.
興建高爐是整個大鋼廠最艱鉅的工程，高度達八六．三公尺，直徑一○．三公尺，載重二萬餘噸，曾打下二千六百根雷蒙樁及 PC 樁，澆灌混凝土五萬九千立方公尺，方才鞏固了它的基礎。