Description
Gas Line Sizing by Velocity Calculation
Engineering Spreadsheet — Instant Download
What This Spreadsheet Does
Sizes gas pipelines using the velocity-based approach — the practical, industry-accepted method when noise, erosion, or pressure drop limits aren’t the controlling design criteria. Covers natural gas, fuel gas, instrument air, and process gas services.
What’s Inside the Excel File
- Inputs — gas mass flow or volumetric flow, pressure, temperature, molecular weight, allowable velocity, pipe schedule
- Gas density calculation from PVT data
- Required cross-sectional area from flow ÷ velocity
- Pipe ID selection from standard schedules (sch 40, 80, 160, XS)
- Actual velocity check in selected pipe
- Erosional velocity check per API RP 14E
Who This Is For
- Piping and process engineers
- Oil & Gas plant designers
- EPC piping teams
- Plant operations engineers verifying line sizes
Codes & Standards Referenced
- API RP 14E — Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems (erosional velocity)
- Industry standard velocity criteria
How It Works
| 1 | Purchase — secure payment |
| 2 | Download — instant Excel access |
| 3 | Enter Values — gas data and allowable velocity |
| 4 | Get Results — recommended pipe size and actual velocity |
File Format & Compatibility
Microsoft Excel (.xlsx). Opens in Excel 2016+, Excel 365, Google Sheets. No macros, no locked cells.
What You Get After Payment
- ✅ Instant download (also emailed)
- ✅ Lifetime access
- ✅ Engineer email support
- ✅ 7-day refund if file fails to open
🌍 Trusted by engineers across 50+ countries · 📚 Part of 160+ engineering spreadsheets · 🛠 Support from qualified engineers
Frequently Asked Questions
Velocity or pressure drop sizing?
This sheet is velocity-based. For pressure drop, see our Line Sizing & Pressure Drop sheet.
Does it handle two-phase flow?
No — single-phase gas only. For two-phase, see our Two-Phase Flow Pressure Drop sheet.
Custom version needed?
Request a custom quote.
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