Most of the oil refining processes such as distilling and cooking require high temperatures and pressures, which would not allow the use of thermoplastic piping systems. There are, however, several chemical applications that are used throughout the plant. For example, sodium hypochlorite is used to control microbial growth and sulfuric acid is used to adjust pH. These chemical applications are perfect for Asahi/America's line of industrial-grade thermoplastic piping systems and valves.