# Sheet Metal Flat Pattern Calc — Cone Cylinder Elbow Layout

> Cone Cylinder Elbow Layout (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/sheet-metal-flat-pattern-calc/id6761447559 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858)
- Category: Utilities, Productivity
- Price: $4.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-04-02
- Data updated: 2026-07-18
- User reviews in markdown: https://appshunter.io/ios/app/sheet-metal-flat-pattern-calc/id6761447559/reviews.md

## What is Sheet Metal Flat Pattern Calc?

Need the flat blank dimensions for a cone, cylinder, or segmented elbow before cutting sheet metal? Enter your finished part geometry and instantly get the developed flat pattern — arc radii, arc angles, gore layouts, and seam allowances. No more hand-drafting on the shop floor.

WHAT IT CALCULATES:

Cones:
- Flat blank inner and outer radius
- Blank arc angle
- Blank arc length
- Developed (flat) blank dimensions

Cylinders:
- Circumference and blank width
- Flat blank length and height
- Material allowance for seams

Elbows:
- Multi-piece elbow segment patterns
- Gore dimensions for each segment
- Throat and heel radius calculations

KEY FEATURES:

- Imperial (in) and Metric (mm) unit support
- Cone, cylinder, and elbow pattern types
- Adjustable wall thickness and seam allowance
- Instant results as you type
- Clean, easy-to-read layout
- Works completely offline
- No account or login required

BUILT FOR THE SHOP FLOOR:

Whether you are a sheet metal worker, HVAC fabricator, or mechanical estimator, this app gives you accurate blank dimensions for cutting and rolling. Enter your finished part geometry and get your flat layout in seconds.

Calculations follow standard sheet metal development methods for right circular cones, cylinders, and segmented elbows.


## Version history (last 3 releases)

### 1.0.2 — 2026-06-28

Added a More Pro Tools section to discover related field calculators.

### 1.0.1 — 2026-04-14

Bug fixes and performance improvements.

### 1.0 — 2026-04-02

No release notes.

## 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

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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 2026-07-18.*