Skip to main content

Re: [MW:34693] PQR qualification with pipe & flange

By Materials & Welding

Just to add, there will be some requirement in the specification such as

1. For the sour service Pipeline, each Grade of material requires PQR testing.
2. Carbon Equivalent difference
3. Each product form requires separate testing etc..

Thanks & Regards

J.Gerald Jayakumar



On Thursday, 7 December, 2023 at 11:59:44 am IST, james gerald <gerry_tup@yahoo.com> wrote:


Your Question is very generic.

It depends on the Code, Specification, and Application.

For eg if the Code is ASME Sec.IX and the pipe is SA106Gr.B & the Flange is SA105, then P.No & Group No of pipe will be P1 & Gr.1 Whereas Flange will be P1 & Gr.2.

If you Qualify P1 Gr.1 to P1 Gr2, then it qualifies P1Gr1 to P1Gr1 and P1Gr2 to P1Gr2 & P1Gr1 to P1Gr2.

See below snap shot from ASME Sec.iX

Inline image


Thanks & Regards

J.Gerald Jayakumar




On Wednesday, 6 December, 2023 at 11:08:22 am IST, Muhammed Shareef <shareefpyari@gmail.com> wrote:


Dear experts,

Is it mandatory to qualify PQR with pipe and flange.? Why can't we qualify with pipe only. What is the limitations here to do so.


Thanks

--
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/CAL2iHPvcgmWqje6V5d4g8iojz_p%3DXHmB7LCHG2vfQWbzUs33GA%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more

[MW:5202] RE: 5200] NDT after PWHT

By Materials & Welding
------------------------------------- Interpretation:  I‑89‑14 Subject:         Section I (1986 Edition, 1987 Addenda), PW‑11,                  NDE Prior to PWHT Date Issued:     December 15, 1988 File:            BC88‑393   Question: Does PW‑11 require that NDE be performed on welds after they have been subjected to the postweld heat treatment required by PW‑39?   Reply: No, unless the conditions described in PW‑11.2.2 exist. ---------------------------------------------- Interpretation:  VIII-1-98-09 Subject:         Section VIII, Division 1 (1995 Edition, 1996 Addenda); NDE                 ...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more