Hello everyone,

I have a short question regarding the application of welding dimensions in a half-section view.

I have been told that it is forbidden to use welding dimensions in a half section view of a symmetrical part, because the welding dimension is an exception in this case. The welding dimension only applies on the half section and not "on the other half". 

Do you guys have heard something similiiar ? Or do you know a norm/standard, where it is explained ?
The norm DIN EN 2553 is abouth welding dimensioning, but it doesn't say anything about half-sections.

Thank you
Albert