Re: [MW:30418] Base material for Welder Qualification

Check out QW 380/381 of Sec IX as well to take note of the essential variables  mentioned therein.

Thanks 

Amitabh

On Wednesday, January 22, 2020, 05:56:31 AM EST, 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, 

Sajeev  

On 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 ,

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/56526bac-5085-413d-80e7-995e94304506%40googlegroups.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CANSvUP39VDd26DZvsAhxb9rOEz-Xur7-QJu%2BX4_MKVwqGQ_eew%40mail.gmail.com.