NominalDiameter
( D ) PressureRating Radius
( R ) WallThickness
( T ) inch psi inch inch 1 150 2 3/16 1- 1/2 150 3 3/16 2 150 4 1/4 2- 1/2 150 5 1/4 3 150 6 1/4 4 150 6 1/4 5 150 7- 1/2 3/8 6 150 9 3/8 8 150 12 7/16 10 150 15 1/2 12 150 18 5/8 14 150 21 3/4 16 150 24 13/16 18 150 27 7/8 20 150 30 15/16 24 150 36 1- 1/8 30 150 45 1- 3/8 36 150 54 1- 5/8