Piping Related Abbreviations (E)

EFW is an abbreviation of Electric Fusion Welding

EHS stands for Environment, Health, and Safety

ELL is an abbreviation of ELbow

ERW is an abbreviation of Electric Resistance Welded
Originally Electric Resistance Welded which contains a solid phase butt weld, was produced using resistance heating to make the longitudinal weld (ERW). Most pipe mills now use high frequency induction heating (HFI) for better control and consistency. However, the product is still often referred to as ERW pipe, even though the weld may have been produced by the HFI process.

ESV is an abbreviation of Emergency Shutdown Valve