This class includes :

Manufacture of metal frameworks or skeletons for construction and parts thereof (towers, masts, trusses, bridges, etc)

Manufacture of industrial frameworks in metal (frameworks for blast furnaces, lifting and handling equipment, etc)

Manufacture of prefabricated buildings mainly of metal: site huts, modular exhibition elements, etc.

Manufacture of metal doors, windows and their frames, shutters and gates

Metal room partitions for floor attachment.

This class excludes :

Manufacture of parts for marine or power boilers, see 2513;

Manufacture of assembled railway track fixtures, see 2599;

Manufacture of sections of ships, see 3011.