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What is Understanding P Numbers in Welding about?

The document explains the classification systems for base and filler metals in welding as per ASME Section IX, including P Numbers, F Numbers, and A Numbers. These systems aim to reduce the number of procedure qualification records (PQR) needed for welding by grouping metals based on factors like composition and weldability. It also highlights the importance of considering compatibility factors when changing materials in existing Welding Procedure Specifications (WPS).

Author

heri

Language

EN