In 1995 a new thermosetting-resin system was introduced to handle concentrated sulfuric acid and
organic solvents. Previous fiberglass reinforced plastic (FRP) technology limited the use of composite
piping systems to mild solvents and low concentrations of sulfuric acid (below 75%). Currently, plants
specify lined steel or high alloy metallic piping systems for these applications.
This paper will show results of this thermosetting resin system after 10 years of continuous service
in concentrated sulfuric acid applications.
Key words: sulfuric acid, thermosetting resins, FRP