INDUSTRIES SERVED
Commonwealth serves a broad range of process related industries including:
Petroleum Refining (Downstream)
Oil and Gas Production (Mid-Upstream) 
Petrochemicals and Polymers
 
Commonwealth has provided services to a broad array of clients including:
AGE Refining Hill International
ALON USA Kurita/BP
Aramco LCY Elastomers
Atlantic LNG Lyondell Equistar
British Gas Marathon Petroleum
Calhoun LNG Noble Drilling
Calumet Pasadena Refining
CITGO Premcor Refining
Delek Refining US Government FTC
ExxonMobil Valero