Quickly access API flange specifications on your mobile device. Identify unknown flanges by measurements or search by ring numbers and bolt circles. Supports multiple measurement units and views for easy reference.






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| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (1) | No | No | Oct 2026 | ||
| 2 | Free | 1.0★ (1) | No | No | May 2026 | ||
| 3 | Free | 5.0★ (13) | No | No | Jul 2026 | ||
| 4 | Free | — | No | No | May 2026 | ||
| 5 | Free | — | No | No | May 2026 | ||
| 6 | Free | — | No | No | Aug 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | — | No | No | May 2026 |






Quickly access API flange specifications on your mobile device. Identify unknown flanges by measurements or search by ring numbers and bolt circles. Supports multiple measurement units and views for easy reference.


This application provides a digital slide rule for finding critical dimensions of high-pressure wellhead equipment, including integral flange and ring groove measurements. It functions like a traditional paper slide rule, offering convenience and accessibility for users needing these specific engineering calculations.





Access essential measurements and dimensional data for API 6A integral flanges. This tool provides quick access to critical specifications for engineering and industrial applications.