Schedule 20 PVC Pipe Dimensions Chart Nominal size [inches] Outside diameter [mm] Outside diameter [inches] Wall thickness [mm] Weight [kg/m] 8″ NPS200 219.1 8.625 6.35 33.31 10″ NPS250 273 10.75 6.35 41.77 12″ NPS300 323.8 12.75 6.35 49.73 14″ NPS350 355.6 14 7.92 67.9 Jun 4 2022