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ISO 10628

Last updated October 28, 2025

ISO 10628Diagrams for the chemical and petrochemical industry specifies the classification, content, and representation of flow diagrams. It does not apply to electrical engineering diagrams. ISO 10628 consists of the following parts:

History
General principles
Symbols
See also
Notes and references
External links

Part 1: Specification of Diagrams (ISO 10628-1:2014)^[1]
Part 2: Graphical Symbols (ISO 10628-2:2012)

This document supersedes ISO 10628:2000 and ISO 10628:1997.^[2]

History

This section is empty. You can help by adding to it. (July 2025)

General principles

common elements of flow charts consist of:

Block diagrams
Process flow diagrams
Piping and instrumentation diagrams (P&ID)

Symbols

Symbols in ISO 10628-2

Symbols in groups 1 - 2
Symbols in groups 3 - 5
Symbols in groups 6 - 9
Symbols in groups 10 - 17
Symbols in groups 18 - 20
Symbols in groups 21 - 25
Symbols in groups 26 - 29

Notes and references

External links

v t e International Organization for Standardization (ISO) standards
List of ISO standards – ISO romanizations – IEC standards
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30000+	30170 31000 32000 37001 38500 39075 40314 40500 42010 45001 50001 55000 56000 80000
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