Pipe3XXS pipe

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

Pipe3XXS has a 3 1/2 in. outside diameter and a 5/8 in. nominal wall.

Also known as NPS 3 pipe (3 in. nominal), double-extra strong (XXS) wall.

At 18.6 lb per foot it is the heaviest of the 7 Pipe3 sizes, which run from 1.13 to 18.6 lb/ft.

For strong-axis bending its section modulus is Sx = 3.31 in³ and its moment of inertia Ix = 5.79 in⁴, with a plastic modulus Zx = 4.89 in³.

Detailing dimensions

Outside diameter3 1/2"
Nominal wall (t)5/8"

Section properties

Weight18.6 lb/ft
Area (A)5.17 in²
Ix5.79 in⁴
Sx3.31 in³
Zx4.89 in³
rx1.06 in
Iy5.79 in⁴
Sy3.31 in³
Zy4.89 in³
ry1.06 in
J11.6 in⁴

Other Pipe3 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

Pipe3/4STDPipe3/4XSPipe3STDPipe3-1/2STDPipe3XSPipe3-1/2XS

Similar weight pipe sizes

Comparable 18.6 lb/ft sections in other pipe sizes.

Pipe6STD19 lb/ft · Sx 7.99 in³Pipe5XS20.8 lb/ft · Sx 7.02 in³Pipe4XS15 lb/ft · Sx 4.05 in³Pipe5STD14.6 lb/ft · Sx 5.14 in³Pipe2-1/2XXS13.7 lb/ft · Sx 1.94 in³Pipe4STD10.8 lb/ft · Sx 3.03 in³Pipe4XXS27.6 lb/ft · Sx 6.53 in³Pipe2XXS9.04 lb/ft · Sx 1.07 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need Pipe3XXS cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Pipe · Steel Beam Size Chart

Interactive drawing