Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Industrial production (based on the 2008 International Recommendations for Industrial Statistics)

• 1 - Industrial production
• 31-33 - Manufacturing
• 325 - Chemical manufacturing
• 3251 - Basic chemical manufacturing

32511 - Petrochemical manufacturing

This industry comprises establishments primarily engaged in converting feedstocks derived from petroleum, or from petroleum and natural gas liquids, into petrochemicals. Some important processes used in petrochemical manufacturing include steam cracking and steam reforming. For the purpose of defining this industry, petrochemicals consist of acyclic (aliphatic) hydrocarbons and cyclic aromatic hydrocarbons.