SPSI | Pipe Fabrication, Piping Systems, Industrial Pipe Manufacturing, Chemical Pipes, Petroleum Piping Pipe Fabrication, Piping Systems, Industrial Pipe Manufacturing, Chemical Pipes, Petroleum Piping SPSI (Scott Process Systems, Inc.) is a privately held fabricator of process, power and nuclear piping systems used primarily in the domestic and international power generation and petrochemical industries. Founded in 1983 in Hartville, Ohio, SPSI is one of the most recognized global leaders in pipe fabrication.