uni en 22553 symbolic representation of welding

[gil]

within the standard uni en 22553 the requirements for the symbolic representation of welding are specified. is specified that in the welding arrow it is possible to insert a reference to the “sheet of welding procedure”. as from extract below.
but what is a sheet of welding procedure?

 

[gil]

I think he might be referring to the wps, but we're in my opinion...

 

[marcellofoglia]

 

[meccanicamg]

the welding procedure is only one, which then do the wps or write and describe in three lines the exact welding process is always "the procedure".