The electric furnace iron-making method artificially generates electric discharge similar to lightning, called arc discharge, using the heat from the discharge to melt iron, and removing impurities such as oxygen and sulfur before iron making. Since this method is mainly intended for iron recycling, it uses scrap iron as material and saves energy compared with the blast furnace method, allowing the reduction of power consumption by 85% and carbon dioxide emission by as much as 92%. The efficiency becomes higher when it is possible to apply rolling immediately after forming. Rolling, however, tends to lag behind forming, making the heated iron (billets) cool down. To solve the problem, provide a heating furnace between the forming and rolling processes, so that billets do not cool down before rolling. A walking beam conveys billets while it is heated from above and below. This provides better efficiency than an ordinary conveyor. The Power Cylinder is used to circulate the billets efficiently between the thermal storage type (regenerative) burners by its horizontal strokes while oscillating.