Masts and pylons,
Towers and metal supports for communication systems,
Supports and pylons for power transmission lines,
Metal columns  for telephone lines and power transmission lines,
Stacks for projectors and air field beacons,
Support for tram and trolleybus lines,
Masts for windgenerators,
Racks, support and trellised support,
Portable coverings for roads and runways made of modular metal sheets,
Steelworks for hydroelectric power stations,
Avalance protections,
Steelworks for racks bearers,
Beams and crossbars of metal for ferro-concrete interfloor overlappings,
Matal designs of arches,
Dedusters, dust collectors for air clearing.