Steel Beam Sizes / AISC / Pipe / Pipe3xxS

Pipe3xxS Steel Beam Dimensions and Properties

AISC Pipe sections · v16.0

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

Pipe3xxS dimensions

Not to scale. Dimensions shown for reference.

Section properties

Symbols match the steel section finder. Imperial and metric values are shown side by side.

Property Imperial Metric
Weight 18.60 lb/ft 27.70 kg/m
OD 3.500 in 88.900 mm
Nominal tw 0.600 in 15.200 mm
Design tw 0.559 in 14.200 mm
Area 5.17 in² 3,340.00 mm²
Ix 5.79 in⁴ 2,410,000 mm⁴
Iy 5.79 in⁴ 2,410,000 mm⁴
Sx 3.31 in³ 54,200.00 mm³
Sy 3.31 in³ 54,200.00 mm³
Zx 4.89 in³ 80,100.00 mm³
Zy 4.89 in³ 80,100.00 mm³
rx 1.06 in 26.90 mm
ry 1.06 in 26.90 mm
J 11.60 in⁴ 4,830,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus Pipe3xxS.

Lighter in Pipe sections

Pipe4xS

Weight
15.0 lb/ft (-19%)
Depth
— in
Ix
9.1 in⁴ (+58%)

Heavier in Pipe sections

Pipe6STD

Weight
19.0 lb/ft (+2.2%)
Depth
— in
Ix
26.5 in⁴ (+358%)

Closest Iₓ in Pipe sections

Pipe3-1/2xS

Weight
12.5 lb/ft (-33%)
Depth
— in
Ix
5.9 in⁴ (+2.6%)
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Source: AISC Shapes Database v16.0 · Methodology