What a transformation! 16th June 2018 What a transformation! 1 of 10 petrochemical tanks completed last year by one of our teams at a refinery in the South East of England. Full St3 (spot Sa2.5) prep followed by the recorded application of a Sherwin Williams 3 coat paint system. Share: Newer Post If it can be cleaned, we can clean it! Older Post Watch this space.