Pipe Sizing Calculator
Determine the internal diameter of a pipe according to standard API 14E sizing criteria
Pipe Sizing Calculator
(API 14E)
Results
Main recommendations for designing a piping system
The API Recommend Practice 14E (RP14E) – Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems – provides guideline to the design and installation of new piping systems.
The main recommendations for sizing a piping system are:
Sizing Criteria
Both the flow velocity and pressure drop should be considered
Flow Rate
Use the maximum flow rate expected during the life of the facility
Surge Factor
It is advisable to add a surge factor of 20 to 50% to normal flow rate
Equivalent Length
Equivalent length may be used to include the effect of valves and fittings
Engineering Judgement
Calculated line sizes may need to be adjusted in accordance with good engineering judgement
⚠️ Disclaimer
The results provided by this calculator are for informational purposes only and should not be considered professional engineering advice. While we strive for accuracy:
- This tool does not replace analysis by a qualified engineer
- Results may vary based on real-world conditions and input assumptions
- Final design decisions remain the responsibility of qualified personnel
- We disclaim all liability for damages arising from use of these calculations
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