ANSI/ASME B36.10 & B36.19

Pipe Schedule & Wall Thickness

Quick reference for ANSI/ASME pipe schedules, wall thicknesses, and inside diameters. Useful for confirming line size and bore on quote requests. Covers NPS 1/2" through 24".

Lookup

Pick the pipe family, nominal size, and schedule. We'll return OD, wall, and ID.

Note: OD is fixed by NPS; schedule changes the wall thickness (and therefore the ID). Stainless schedules (5S, 10S, 40S, 80S) typically run thinner than their carbon-steel namesakes at NPS 12 and below.

Pipe Dimensions

B36.10

—

OD
—in
Wall
—in
ID
—in

All Schedules for This NPS

ScheduleWallID
STD = Standard XS = Extra Strong (same as Sch 80 up to NPS 8) XXS = Double Extra Strong
Reference values only. Confirm against ANSI/ASME B36.10M-2018 or B36.19M-2018 before specifying. Mill-rolled and seamless pipe carry allowable tolerances on wall thickness; for hydrostatic or pressure-rating work, use the minimum wall after mill tolerance.
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