Technical Drawing standards: Line Types.


8.220 FANS

The British standards give us fifteen line types to use. Not all of them have a specific meaning –  or at least they only have a meaning that is specific to the industry they are used in.

You are not limited to these line types. You can define your own,  but the British standards require that you add a key to your drawing to describe your custom line types meaning.

BS ISO Standard line types

BS 8888:2008 Technical product specification.

BS EN ISO 128-20:2001 Technical drawings. General principles of presentation. Basic conventions for lines

BS ISO 128-23:1999 Technical drawings. General principles of presentation. Lines on construction drawings

BS ISO 128-24:1999 Technical drawings. General principles of presentation. Lines on mechanical engineering drawings

 

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