How Many GPM Can Flow Through A 1 Pipe?

How Many GPM Can Flow Through A 1 Pipe? Assume Average Pressure. (20-100PSI) About 12f/s flow velocity 1/2′′ .50-.60′′ 14 gpm 3/4′′ .75-.85′′ 23 gpm 1′′ 1.00-1.03′′37 gpm 1.25′′ 1.25-1.36′′ 62 gpm How much water can a 1 inch pipe pass? Assume Average Pressure (20-100PSI). About 12 f/s flow velocity 1/2′′ 0.5 – 0.6′′ 14