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Corrosion
   
Extererior Interior
Atmospheres with low level of pollution. Mostly rural areas. Unheated buildings, where condensation may occur, e.g. depots, sport halls.
Urban and industrial atmospheres, moderate sulphur dioxide pollution. Coastal areas with low salinity. Production rooms with high humidity and some air pollution, e.g. food processing plants, laundries, breweries.
Industrial areas and coastal areas with moderate salinity. Chemical plants, swimming pools, coastal shipyards.
Industrial areas with high humidity and aggressive atmospheres. Buildings or areas with almost permanent condensation and with high pollution.
Coastal and offshore areas with high salinity. Buildings or areas with almost permanent condensation and with high pollution.
Electric actuators covered by this standard are not designed for permanent immersion unless otherwise specified
River installations, hydro-electric power plants
Harbour areas und offshore structures