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                 - metallic 
              structures up to 180 m height - 50,000 t/year 
                  - tanks up to 50,000 m3 volume - 20,000 
              t/year 
                  - spherical tanks up to 5,000 m3 volume 
              - 2,500 t/year 
                  - equipments up to 1,000 t from pieces (350 
              t/piece) - 120,000 t/year 
                  - high pressure and temperature piping systems 
              - 60,000 t/year 
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