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Re: [MW:33911] Pre-Qualified WPSs

By Materials & Welding
pWPS---prelimary WPS which is to be qualified as per ISO standards
THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE,  CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer. 
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349


On Tue, Jan 10, 2023 at 9:14 AM Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:
Pre Qualified WPS or Standard WPS need not be qualified, with restrictions u can use.
THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE,  CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer. 
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349


On Tue, Jan 10, 2023 at 8:34 AM Faisal Sattar <faisalsattar315@gmail.com> wrote:
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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