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About SectionLib

A professional steel data platform built for engineers who need accurate, accessible structural section information and fast calculation tools.

Our Mission

Engineering-grade data, accessible to every professional

SectionLib was built out of a practical need: engineers on industrial projects — pipe racks, process plants, offshore topsides — frequently need rapid access to steel section properties without trawling through standard tables or waiting for software licenses.

The platform aggregates section data from EN 10025, ASTM A6/A572, IS 808:2021, API 5L, and ASME B36 standards into a single, searchable, tool-supported reference. All data is cross-referenced against source standards and reviewed before publication.

450+
Section Profiles
Covering IPE, HEA, HEB, UPN, API pipes, angles, bars, and flat sections.
17
Section Families
Organised by structural shape for fast navigation and filtering.
6
Engineering Standards
EN 10025, EN 10210, EN 10056, API 5L, ASME B36.10, EN 10058.
3
Calculation Tools
Weight calculator, section properties, and unit converter — all browser-based.
Standards Coverage
EN 10025 — Structural Steel Sections
EN 10210 — Hollow Sections
EN 10056 — Equal & Unequal Angles
EN 10058 — Flat Bars
EN 10060 — Round Bars
API 5L — Line Pipe
ASME B36.10 — Welded Steel Pipe
ASME B36.19 — Stainless Steel Pipe
Data Sources & Standards
European Sections
  • → EN 10025-2 — Hot-rolled structural steel
  • → EN 10056-1 — Equal & unequal angles
  • → EN 10210-2 — Hot-finished hollow sections
  • → EN 10219-2 — Cold-formed hollow sections
American Sections
  • → ASTM A6/A6M-19 — Standard beams & channels
  • → AISC Steel Construction Manual 16th Ed
  • → ASTM A572 — High-strength low-alloy steel
  • → API 5L / ASME B36 — Line pipe & pipe schedules
Indian Standards
  • → IS 808:2021 — Hot-rolled steel sections
  • → IS 2062:2011 — Steel grades for structural use
Important disclaimer: All data published on SectionLib is for reference and informational purposes only. It does not replace independent verification by a qualified structural engineer against the current revision of applicable standards. SectionLib accepts no liability for errors, omissions, or engineering decisions based on this data.
Design Principles

Built for How Engineers Work

No Installation, No Login
All tools work directly in the browser. Open a page, enter values, get results. No account creation, no software to install, no subscription required.
Data Integrity
Section data is sourced from authoritative published standards and manually reviewed for accuracy. Corrections and updates are applied promptly when identified.
Mobile-Ready
Fully responsive interface works on tablets and mobile devices — useful for engineers who need to check a figure on-site or in the field.
Clear Limitations
The platform is a reference tool — all pages carry explicit disclaimers. It does not replace project specifications, engineering calculations, or certified documentation.
Printable Output
Section data sheets and calculation results can be printed or saved as PDF directly from the browser, making them easy to include in engineering packages.
Continuously Expanded
The section library grows with new standards, profiles, and regional variants. User feedback is used to prioritise which data sets to add next.
Important Disclaimer All data and calculation results published on this platform are for reference purposes only. While every effort is made to ensure accuracy, SectionLib does not warrant that all data is free from error. Engineers are responsible for verifying all values against the current revision of applicable standards before using them in structural design, material specification, or procurement. SectionLib accepts no liability for engineering decisions made based on information from this site.