Pipes are sized based on their nominal pipe size (NPS), which is the approximate, but not exact, inside diameter. The inside diameter will vary based on the pipe’s wall thickness, which is known as ...

Power plant piping with a nominal pipe size of four inches or larger that carries steam or water operating at greater than 750F or 1,025 psi is considered a “covered piping system.” ...

Its nominal 2.375 inch /60.3 mm (OD), 30 ft/9m long pipe shaft is filament wound with 12K carbon fiber combined with glass fibers in epoxy resin over an elastomeric liner. Standard API rotary shoulder ...