Steel structure around the blast furnace, weight 7500 tons, volume of structures 90x90x92 meters. A total of functionally 6 interconnected and interacting structures. The structure is designed in a seismically highly active area.
- Cast floor – casting platform
- Cast house – shop above the casting platform
- Extension Structure – extension of the shop with staircase and elevator shaft
- Lower Tower – lower part of the tower around the furnace
- Middle Tower – central part of the tower around the furnace
- Upper Tower – upper part of the tower (originally part designed by the customer)