Core business activities, controlled by Marcegaglia Steel (holding company, which represents 97% of total activities), are organized through six different operating companies:

· Marcegaglia Ravenna and Marcegaglia Carbon Steel with the flat products and welded tubes divisions
· Marcegaglia Buildtech
· Marcegaglia Gazoldo Inox and Marcegaglia Specialties with the stainless products and cold drawn bars divisions
· Marcegaglia Plates for the heavy plates production

Marcegaglia Investments is the holding for the diversified activities (3% of total activities).