33.20.Z - Installation of industrial machinery and equipment and outfit
25.11.Z - Manufacture of metal structures and parts of structures
25.30.Z - Manufacture of steam generators, except central heating hot water boilers
25.62.Z - Mechanical working of metal elements
28.21.Z - Manufacture of ovens, furnaces and furnace burners
33.11.Z - Repair and maintenance of fabricated metal products
33.12.Z - Repair and maintenance of machinery
42.21.Z - Works related to construction of transmission pipelines and distribution networks
43.12.Z - Site preparation
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
43.32.Z - Joinery installation
43.39.Z - Other building completion and finishing
43.99.Z - Other specialised construction activities not elsewhere classified