reference rules for drawings of sheets

[e.ferriani]

I wondered what the reference rule was to be included in the drawings of details in cut/rolled/rolled sheet, and if there is some scrap to be downloaded somewhere.
for mechanical processing use the uni en 22768 m-k. Will there also be one for the metal carpentry?
Thank you.

 

[PiE81]

for welded details, there is definitely a reference standard for dimensional tolerances and is
the uni en iso 13920:2000 "saving - general tolerances for welded constructions - linear and angle dimensions - shape and position".
specific for the plates, that I know is not there.