– American Water Works Association (AWWA)
– American Petroleum Institute (API)
– British Standard (BS)
– Korean Industrial Standard (KS)
– Deutsches Institute for Norman (DIN)
– Japan Industrial Standard (JIS)
– International Organization for Standardization (ISO)
– American National Standards Institute (ANSI)
– American Society of Mechanical Engineers (ASME)
– Norwegian shelf’s competitive position (NORSOK)
