# Flange Estimator

> Flange Estimator (iPhone/iPad app by RARE PETRO Technologies, Inc..)

- Source: https://appshunter.io/ios/app/flange-estimator/id1095878098 (this page in markdown: same URL + `.md`)
- Developer: [RARE PETRO Technologies, Inc.](https://appshunter.io/developer/1150196892)
- Category: Productivity, Business
- Price: $1.99
- Age rating: 4+
- Requires: iOS 9.0 · 4 MB
- Languages: English
- Released: 2016-03-30
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/flange-estimator/id1095878098/reviews.md

## What is Flange Estimator?

A great API reference to all size flanges ranging from as small as 1-13/16" to as large as 21-1/4" (API) and 30" non-API. This handy tool can help eliminate ordering the wrong equipment or installing incorrect pressure ratings thus improving construction efficiency for all types of industry (any process line or facility containing steam, water, oil or gas). Have everything you need to know about steel grade flanges at your fingertips.

Some of the information included in this app:
* Bolt Pattern
* Bolt Size
* Bolt Length
* Number Of Bolts
* API Ring Size
* Bore Size
* Flange Thickness
* Flange Rating
* Plus more....


## Version history (last 1 release)

### 1.0.2 — 2019-11-13

Compatibility update for iOS 13 and newer devices of various screen sizes

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## More apps by RARE PETRO Technologies, Inc.

- [Rod Pump Calculator PRO](https://appshunter.io/ios/app/rod-pump-calculator-pro/id1062101449)
- [Capacities Pro](https://appshunter.io/ios/app/capacities-pro/id1125083680)
- [Nichols Energy Services](https://appshunter.io/ios/app/nichols-energy-services/id1252025381)
- [ARB Energy Production Utah](https://appshunter.io/ios/app/arb-energy-production-utah/id1496653526)

All apps by RARE PETRO Technologies, Inc.: https://appshunter.io/developer/1150196892

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*