Medium Soot In the factory, the iron is heated to high degrees Celsius to become a liquid and filled into a mold for pouring

foundry industrial factory industry furnace iron steel metal fire casting manufacturing metallurgy liquid molten heat flame equipment workshop hot melting heavy cast metallurgical smelting plant technology mill glowing pouring production work red power construction manufacture bright sparks mold spark pour temperature steelworks worker material light ladle safety melt cast iron