a) Qualification of the welding processes for metals; arc welding of steel;

UNI EN 288/3:1993/A1:1999 (tig welding manual)
UNI EN ISO 15614 - 1:2012 (mag welding)

b) Qualification of the welding process for metals; welding for the arc welding of aluminium and its alloys

UNI EN 288-4:1993 A1:1999 standard
Welding process:131 (Mig welding) – 141 (Tig welding)

c) Qualification of the welders for the fusion welding and the resistance welding for the mechanized and automatic welding of metals

UNI EN ISO 14732:2013
welding process :135 (Mag welding)
141 (Tig welding)

d) Qualification of the welders for the fusion welding of steel, aluminium and its alloys:

UNI EN 287-1 welding process 135 (Mag welding)
UNI EN 287-1 welding process 141 (Tig welding)
UNI EN 9606-2 welding process 131 (Mig welding)
UNI EN 9606-2 welding process 141 (Tig welding)

 

Checks on the welds are performed by qualified personnel in accordance with UNI EN 473:2008 e ISO 9712:2005