How will explain defferece between pqr and wpq

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Accepted Answer

PQR is a Procedure Qualification Record which documents the welding parameters used to qualify a welding procedure. WPQ is a Welder Performance Qualification which certifies a welder's ability to produce sound welds.

PQR is a document that specifies the welding parameters used during the qualification of a welding procedure
WPQ is a certification that confirms a welder's ability to produce sound welds according to a qualified welding procedure
PQR is used to establish the welding procedure specifications, while WPQ is used to certify the welder's skill and ability
Examples: PQR may include details like welding process, filler metal, preheat temperature, etc. WPQ involves a welder performing test welds to demonstrate proficiency