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.
https://andro.io/app/pnumbers2
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P Numbers for Android – Latest Version & Features
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