P Numbers
C-Spec Productivity
Quick lookup of base metal weldability grouping numbers.
- Rating
- 5.0
- 14 ratings
- Downloads
- 6.5K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Jul 29
- 2026 · v2.2.2
Screenshots
About P Numbers
P-Numbers: Quick lookup of base metal weldability grouping numbers for welding procedure and performance qualification. Data is provided by C-spec from the master source used for generation, proof-reading and maintenance of ASME Section IX Table QW/QB-422, AWS B2.1 Table C1 and C2, and ISO/TR 20173.
What’s new
Version 2.2.2 · Updated July 29, 2026
Updated the app to target Android 16 (API level 36) to comply with the latest Google Play requirements.
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