# FlangeTorq: Flange Bolt Torque — ASME PCC-1 · B7 · Spiral Wound

> ASME PCC-1 · B7 · Spiral Wound (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/flangetorq-flange-bolt-torque/id6761482652 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858)
- Category: Utilities, Productivity
- Price: $9.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-04-02
- Data updated: 2026-10-25

## What is FlangeTorq?

Built for pipefitters, mechanical contractors, and plant maintenance who need ASME PCC-1 flange bolt torque on the iron - not a dashboard you log into.

WHAT IT DOES
Computes flange bolt torque per the ASME PCC-1 4-pass tightening sequence, with bolt load, bolt stress, and the gasket factor / seating stress that drives the calculation. Pulls flange dimensions from ASME B16.5, tensile stress area from ASME B1.1, and bolt-material proof strength from A193 / A320.

INPUTS
- Flange size: 1" to 24"
- Pressure class: 150, 300, 600, 900, 1500
- Gasket type: Spiral Wound, Ring Joint, Flat Non-Asbestos
- Bolt material: B7, B7M, L7, B8 Cl.2 (per A193 / A320)
- Lubricant: Dry, Moly, Anti-Seize, PTFE
- Target bolt stress: 20-80% of yield (slider)

RETURNS
- Torque per bolt in ft-lbs and N·m
- Bolt load per bolt and total assembly load (lb)
- Bolt stress at the selected yield percentage (psi)
- Effective nut factor K
- ASME PCC-1 4-pass tightening sequence: 30%, 60%, 100%, plus a circular check pass

STANDARDS REFERENCED
- ASME PCC-1 - gasket factor, seating stress, tightening pattern
- ASME B16.5 - flange dimensions and bolt count
- ASME B1.1 - tensile stress area
- A193 / A320 - B7, B7M, L7, B8 Cl.2 bolt material specs

WHY THIS APP, NOT THE FREE ONES
- Math is shown - formula and substitution visible for every result. No black box.
- Standards cited - ASME PCC-1, B16.5, B1.1. Inspector-defensible.
- Works offline - refinery turnarounds, plant outages, field digs. Always available.
- No login. No ads. No telemetry. No subscription.

PRICING
$4.99. Pay once, own it. Lifetime access on iPhone, iPad, and Mac via Family Sharing.

NOT A SUBSTITUTE FOR
Project-specific bolt-up procedures. Calibrated torque wrench certificates. ASME PCC-1 elastic interaction passes for tight-fit assemblies. Always cross-reference the engineer-stamped tightening sequence on file.

## Is FlangeTorq safe?

Not enough ratings yet to assess FlangeTorq.

## Is FlangeTorq legit?

FlangeTorq: Flange Bolt Torque appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for FlangeTorq is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.0.2 — 2026-10-22

Updated the app name and search keywords so the app is easier to find. Improved layout on iPhone Duo and iPad. No changes to the calculations.

### 1.0.1 — 2026-04-29

Listing refresh - clarified the description, inputs/outputs, and which standards are referenced. No functional changes.

### 1.0 — 2026-04-02

No release notes.

## Apps similar to FlangeTorq

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Boiler Efficiency](https://appshunter.io/ios/app/boiler-efficiency/id490506363) | — | $5.99 | Utilities |
| [Heat Exchanger Area](https://appshunter.io/ios/app/heat-exchanger-area/id1490690839) | — | $1.99 | Utilities |
| [FastenIQ](https://appshunter.io/ios/app/fasteniq/id6758679320) | — | Free | Utilities |
| [Bolt IQ+](https://appshunter.io/ios/app/bolt-iq-plus/id6760457662) | 4.8 (5) | Free | Utilities |
| [Voice Countdown Timer](https://appshunter.io/ios/app/voice-countdown-timer/id6502920911) | 1.0 (1) | Free | Utilities |
| [Cutlist Optimizer - MDF Master](https://appshunter.io/ios/app/cutlist-optimizer-mdf-master/id6743643399) | 5.0 (1) | Free | Utilities |

## More apps by Shanghai Sheyuan Network Technology Co., Ltd.

- [木不 - 解忧伴侣](https://appshunter.io/ios/app/id1597427913)
- [上岸香 - 考研考公专注助手](https://appshunter.io/ios/app/id6758300319)
- [Stamping Tonnage Calculator](https://appshunter.io/ios/app/stamping-tonnage-calculator/id6760528007)
- [CNC Thread Drill Hole Calc](https://appshunter.io/ios/app/cnc-thread-drill-hole-calc/id6760606318)
- [Orifice Jet Flow](https://appshunter.io/ios/app/orifice-jet-flow/id6760607248)
- [Concrete Block Wall Est](https://appshunter.io/ios/app/concrete-block-wall-est/id6760607814)

All apps by Shanghai Sheyuan Network Technology Co., Ltd.: https://appshunter.io/developer/1560626858

## Related topics

[flange bolt](https://appshunter.io/ios/topics/flange-bolt) · [flange bolt chart](https://appshunter.io/ios/topics/flange-bolt-chart)

---

*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 2026-10-25.*