AASHTO – American Association of Highway Transportation Officials

ANSI – American National Standards Institute

API – American Petroleum Institute

ASHRAE – American Society for Heating, Refrigeration, and Air-Conditioning Engineers

ASTM – American Society for Testing and Materials

BSI – British Standards Institution

CSA – Canadian Standards Association

DIN – Deutsches Insitut für Normung

EI – Energy Institute

EPA – Environmental Protection Agency

GPA – Gas Processors Association

IP – Institute of Petroleum

ISA – Instrumentation, Systems, and Automation Society

ISO – International Organization for Standardization

NACE – National Association of Corrosion Engineers

NSSN – National Standards Systems Network

SPE – Society of Petroleum Engineers