Yes, PWPS means Pre-WPS. Based on that document PQR conducted, that needs mechanical test, root, face bend test and Tensile test. If test results are in acceptance limit than finally PWPS becomes WPS or final document ready for production welding.
On Tue, 10 Jan 2023, 07:59 Zacharias Rohith Joseph, <rohithjoseph18@gmail.com> wrote:
While using pre-qualified WPSs is it mandatory to do mechanical tests ?If yes , why are they called pre - qualified WPSs then ?Thanks--
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