Piping Od Chart. Pipe od, in schedule number or weight wall thkns t, in. For nps 14 and larger, the nps is equal to the outside diameter (od) in inches.
Www.arcelormittal.com/oilandgas/stockprogram pipe schedules (according to asme/ansi. However, line pipe is now used in more varied conditions and industries, so the previous three sizes are no longer sufficient. Nominal pipe size in inch: