Steel Beam Sizes / AISC / Pipe / Pipe20STD

Pipe20STD 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

Pipe20STD 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 78.70 lb/ft 117.00 kg/m
OD 20.000 in 508.000 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 21.60 in² 13,900.00 mm²
Ix 1,040.00 in⁴ 433,000,000 mm⁴
Iy 1,040.00 in⁴ 433,000,000 mm⁴
Sx 104.00 in³ 1,700,000 mm³
Sy 104.00 in³ 1,700,000 mm³
Zx 135.00 in³ 2,210,000 mm³
Zy 135.00 in³ 2,210,000 mm³
rx 6.95 in 177.00 mm
ry 6.95 in 177.00 mm
J 2,090.00 in⁴ 870,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus Pipe20STD.

Lighter in Pipe sections

Pipe8xxS

Weight
72.5 lb/ft (-7.9%)
Depth
— in
Ix
154.0 in⁴ (-85%)

Heavier in Pipe sections

Pipe16xS

Weight
82.9 lb/ft (+5.3%)
Depth
— in
Ix
665.0 in⁴ (-36%)

Closest Iₓ in Pipe sections

Pipe18xS

Weight
93.5 lb/ft (+19%)
Depth
— in
Ix
956.0 in⁴ (-8.1%)
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Source: AISC Shapes Database v16.0 · Methodology