AISC Pipe: Dimensions and Section Properties
Browse AISC steel pipe by nominal diameter and wall class. Compare outside diameter, thickness and section properties.
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Showing AISC · Pipe · Imperial
AISC Shapes Database v16.0 · 2,299 sections
Searches every available library and shape family. Leave the field empty to browse the filters below.
Filter by series
Showing the most relevant 75 sections.
| Designation | Weight (lb/ft) | Depth, d (in) | Width (in) | Area (in²) | Ix (in⁴) | Sx (in³) |
|---|---|---|---|---|---|---|
| Pipe26STD | 103 | — | — | 28.2 | 2320 | 178 |
| Pipe26xS | 136 | — | — | 36.1 | 2950 | 227 |
| Pipe24STD | 94.7 | — | — | 26 | 1820 | 152 |
| Pipe24xS | 126 | — | — | 33.3 | 2310 | 192 |
| Pipe20STD | 78.7 | — | — | 21.6 | 1040 | 104 |
| Pipe20xS | 104 | — | — | 27.6 | 1320 | 132 |
| Pipe18STD | 70.7 | — | — | 19.4 | 756 | 84 |
| Pipe18xS | 93.5 | — | — | 24.8 | 956 | 106 |
| Pipe16STD | 62.6 | — | — | 17.2 | 527 | 65.9 |
| Pipe16xS | 82.9 | — | — | 22 | 665 | 83.1 |
| Pipe14STD | 54.6 | — | — | 15 | 350 | 50 |
| Pipe14xS | 72.2 | — | — | 19.2 | 440 | 62.9 |
| Pipe12STD | 49.6 | — | — | 13.7 | 262 | 41 |
| Pipe12xS | 65.5 | — | — | 17.5 | 339 | 53.2 |
| Pipe12xxS | 126 | — | — | 35.4 | 625 | 97.6 |
| Pipe10STD | 40.5 | — | — | 11.5 | 151 | 28.1 |
| Pipe10xS | 54.8 | — | — | 15.1 | 199 | 37 |
| Pipe10xxS | 104 | — | — | 28.8 | 354 | 65.6 |
| Pipe8STD | 28.6 | — | — | 7.85 | 68.1 | 15.8 |
| Pipe8xS | 43.4 | — | — | 11.9 | 100 | 23.1 |
| Pipe8xxS | 72.5 | — | — | 20 | 154 | 35.8 |
| Pipe6STD | 19 | — | — | 5.2 | 26.5 | 7.99 |
| Pipe6xS | 28.6 | — | — | 7.83 | 38.3 | 11.6 |
| Pipe6xxS | 53.2 | — | — | 14.7 | 63.5 | 19.2 |
| Pipe5STD | 14.6 | — | — | 4.01 | 14.3 | 5.14 |
| Pipe5xS | 20.8 | — | — | 5.73 | 19.5 | 7.02 |
| Pipe5xxS | 38.6 | — | — | 10.7 | 32.2 | 11.6 |
| Pipe4STD | 10.8 | — | — | 2.96 | 6.82 | 3.03 |
| Pipe4xS | 15 | — | — | 4.14 | 9.12 | 4.05 |
| Pipe4xxS | 27.6 | — | — | 7.66 | 14.7 | 6.53 |
| Pipe3-1/2STD | 9.12 | — | — | 2.5 | 4.52 | 2.26 |
| Pipe3-1/2xS | 12.5 | — | — | 3.43 | 5.94 | 2.97 |
| Pipe3STD | 7.58 | — | — | 2.07 | 2.85 | 1.63 |
| Pipe3xS | 10.3 | — | — | 2.83 | 3.7 | 2.11 |
| Pipe3xxS | 18.6 | — | — | 5.17 | 5.79 | 3.31 |
| Pipe2-1/2STD | 5.8 | — | — | 1.61 | 1.45 | 1.01 |
| Pipe2-1/2xS | 7.67 | — | — | 2.1 | 1.83 | 1.27 |
| Pipe2-1/2xxS | 13.7 | — | — | 3.83 | 2.78 | 1.94 |
| Pipe2STD | 3.66 | — | — | 1.02 | 0.627 | 0.528 |
| Pipe2xS | 5.03 | — | — | 1.4 | 0.827 | 0.696 |
| Pipe2xxS | 9.04 | — | — | 2.51 | 1.27 | 1.07 |
| Pipe1-1/2STD | 2.72 | — | — | 0.749 | 0.293 | 0.309 |
| Pipe1-1/2xS | 3.63 | — | — | 1 | 0.372 | 0.392 |
| Pipe1-1/4STD | 2.27 | — | — | 0.625 | 0.184 | 0.222 |
| Pipe1-1/4xS | 3 | — | — | 0.837 | 0.231 | 0.278 |
| Pipe1STD | 1.68 | — | — | 0.469 | 0.083 | 0.126 |
| Pipe1xS | 2.17 | — | — | 0.602 | 0.101 | 0.154 |
| Pipe3/4STD | 1.13 | — | — | 0.312 | 0.035 | 0.0671 |
| Pipe3/4xS | 1.48 | — | — | 0.407 | 0.043 | 0.0818 |
| Pipe1/2STD | 0.85 | — | — | 0.234 | 0.016 | 0.0388 |
| Pipe1/2xS | 1.09 | — | — | 0.303 | 0.019 | 0.0462 |
Family overview
What are AISC Pipe?
AISC Pipe sections cover Standard, Extra-Strong and Double-Extra-Strong wall classes used as columns and members. Designations identify nominal diameter and wall class rather than a simple depth × weight I-beam pattern. Outside diameter and design thickness govern properties. This hub filters the finder to pipe sections for comparison, charts and calculator handoff.
Designations
Understanding Pipe designations
Pipe 4 Std
Pipe designations typically include nominal diameter and wall class (Standard, X-Strong or XX-Strong). Use tabulated outside diameter and thickness for analysis.
Nominal depth series
Browse by series
Use these series labels to filter the finder table above.
Properties
Pipe properties explained
These properties are especially relevant when comparing Pipe. View the complete property glossary.
| Symbol | Property | Units | Why it matters |
|---|---|---|---|
| Weight | Weight | lb/ft, kg/m | Mass per unit length; used for self-weight and economy comparisons |
| OD | Outside diameter | in, mm | Outside diameter for pipe and round HSS |
| tw (Nominal) | Nominal wall thickness | in, mm | Published nominal wall thickness from the shape designation |
| tw (Design) | Design wall thickness | in, mm | Reduced wall thickness used for published design properties |
| A | Cross-sectional area | in², mm² | Total steel cross-sectional area |
| Ix | Moment of inertia (x) | in⁴, mm⁴ | Major-axis flexural stiffness |
| Iy | Moment of inertia (y) | in⁴, mm⁴ | Minor-axis flexural stiffness |
| Sx | Elastic section modulus (x) | in³, mm³ | Elastic bending property about the x-axis |
| Sy | Elastic section modulus (y) | in³, mm³ | Elastic bending property about the y-axis |
| Zx | Plastic section modulus (x) | in³, mm³ | Plastic bending property about the x-axis |
| Zy | Plastic section modulus (y) | in³, mm³ | Plastic bending property about the y-axis |
| rx | Radius of gyration (x) | in, mm | Strong-axis radius of gyration |
| ry | Radius of gyration (y) | in, mm | Weak-axis radius of gyration and lateral stability relevance |
| J | Torsional constant | in⁴, mm⁴ | Torsional constant |
Library summary
Computed Pipe summary
The current AISC Pipe library contains 51 sections across 1 nominal-depth series. Published weights range from 0.85 to 136.00 lb/ft , and actual depths range from 0.84 to 26.00 inches .
- Lightest section
- Pipe1/2STD
- Heaviest section
- Pipe26XS
- Ix range
- 0.02 – 2,950.00 in⁴
- Sx range
- 0.04 – 227.00 in³
Selection
How to compare Pipe
- Match nominal diameter and wall class to the specification.
- Compare outside diameter and thickness, not designation text alone.
- Review Ix and rx for compression or bending use cases.
- Consider round HSS when a different product series is specified.
Beam calculator
Analyze this family in Optimal Beam
Select any pipe section and load it into the Optimal Beam calculator.
Source: AISC Shapes Database v16.0 · Verified July 2026 · View methodology
Questions & answers
Pipe FAQs
How are AISC pipe sections named?
Pipe designations generally combine nominal diameter with wall class such as Standard, X-Strong or XX-Strong.
What is the difference between pipe and round HSS?
Pipe and round HSS are different product families with different designation systems and published thickness conventions. Compare the specified series rather than mixing labels.
Which properties matter for pipe columns?
Outside diameter, thickness, area and radii of gyration are commonly reviewed for axial members, along with flexural properties when bending is present.
Can I analyze pipe in Optimal Beam?
Yes. Select the pipe and choose Analyze to load its properties into the calculator.