Metal extraction & processing facilities face severe corrosion from sulphurous emissions arising from fuels & ores. Steel manufacturing liberates sulphur in the form of sulphur oxides, and hydrogen sulphide (released during coking and slag handling processes). These pollutants form acids in the presence of moisture and cause widespread corrosion. Cold rolling of steel requires hydrochloric acid and spent acid regeneration whose cumulative effects cause massive corrosion of infrastructure including roofing sheets. Fluxing agents and molten zinc used in galvanizing plants cause high corrosive emissions. SO2 released upon roasting of sulfidic zinc ores and CO released during zinc production contribute to severe corrosion in zinc extraction. Aluminium industries release sulphurous fumes, HF, and CO2 during smelting and refining operations. These acid gases are especially corrosive in humid environs and lead to frequent replacement of structural assets. 

METGUARD coatings can dramatically reduce structural failures in such situations.