Dear,
Pl use the provisions of QW-423.1. You can use P1 material for performance qualification.
Regards,
Charles V Jacob
Welding consultant
Magnum Consultancy Services
On Wed, Jan 22, 2020, 4:26 PM Sajeev P <sajeevlaxmi@gmail.com> wrote:
--Greetings,As per Sec. IX, you have to qualify the welders in accordance with QW-301 for joining the base material portion of the cladded pipe. And for welders who will apply the cladded portion of a weld between clad materials, shall be qualified in accordance with QW-381.If the welder is qualified on P1 material, then the welder is qualified to weld only base material portion of the cladded pipe.The welders can qualify as per QW-301 & QW-381 separately or alternatively the welders may qualify using cladded test coupon of at least 3/8in. (10mm) thick and of dimension such that a groove weld can be made to join the base material and the corrosion resistant weld metal overlay can be applied to the completed groove weld as per QW-383.Regards,SajeevOn Wed, Jan 22, 2020, 09:20 Babu Chathoth <babu8803@gmail.com> wrote:Hi friend,--can anybody can assists to clarify , is it applicable for the only P1 material can use for the WQT test for P1 material with clad pipe approved WPS ,
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