Update accordance with ASME BPVC Section IX 2017.
For base metal are assigned in QW-420 - base metal grouping and table QW-422
For filler metal are assigned in QW-430 and table QW-432, QW-442
Read more QW-403 Base metals qualification ASME IX
Grouping of base metal
- P-Number are assigned to base metal for purpose of reducing the number of welding procedure.
- Gr-Number are grouped a min. specified tensile.
Grouping of filler metal
- F-number are grouped welding electrode and welding rode.
- A-Number is a classification of ferrous weld metal analysis.