Design and construction Equipment and supplies Air conditioning 2 Boilers 2 Combustion 2 Condensers (Steam) 2 Heat 2 rhagor ... Heating 2 Piping 2 Plumbing 2 Pumping machinery 2 Refrigeration and refrigerating machinery 2 Steam 2 Steam engineering 2 Steam power plants 2 Steam-boilers 2 Storm sewers 2 Testing 2 Ventilation 2 Water-supply engineering 2 Actuators 1 Air conditioning from central stations 1 Air-compressors 1 Amplifiers (Electronics) 1 Ash disposal 1 Automatic control 1 Bearings (Machinery) 1 Belts and belting 1 Brakes 1 Centrifugal pumps 1 llai ...