This class includes the specialized installation of machinery. However, the installation of equipment that forms an integral part of building or similar structures, such as installation of escalators, electrical wiring, burglar alarm systems or air-conditioning systems, is classified as construction.

This class includes :

Installation of industrial machinery in industrial plant

Installation of industrial process control equipment

Installation of other industrial equipment, e.g. :

communication equipment

mainframe and similar computers

irradiation and electromedical equipment, etc.

Dismantling large-scale machinery and equipment

Activities of millwrights

Installation of bowling alley equipment

Machine rigging

This class excludes:

Installation of electrical wiring, burglar alarm systems, see 4321;

Installation of air-conditioning system, see 4322;

Installation of elevators, escalators, automated doors, vacuum cleaning systems etc., see 4329;

Installation of doors, staircases, shop fittings, furniture, etc., see 4330;

Installation (setting-up) of personal computers, see 6209.