What is the difference between WPS and PQR?

Question

Accepted Answer

WPS outlines welding procedures; PQR verifies and documents the results of those procedures.

WPS (Welding Procedure Specification) provides detailed instructions for welding processes.
PQR (Procedure Qualification Record) documents the results of tests performed to validate the WPS.
WPS includes parameters like material type, joint design, and welding technique.
PQR includes test results such as tensile strength, impact tests, and bend tests.
Example: A WPS might specify using a TIG process on stainless steel, while the PQR would show the actual test results confirming its effectiveness.

Accepted Answer

welding producer specification PQR means producer qualification record

Interview Questions from Popular Companies