Carbon and Alloy Steel Pipe Wall Thickness

NPS 1/2 SCH 40	OD 21.3 mm, wall 2.77 mm
NPS 1 SCH 40	OD 33.4 mm, wall 3.38 mm
NPS 2 SCH 40	OD 60.3 mm, wall 3.91 mm
NPS 4 SCH 40	OD 114.3 mm, wall 6.02 mm
NPS 6 SCH 40	OD 168.3 mm, wall 7.11 mm
NPS 8 SCH 40	OD 219.1 mm, wall 8.18 mm