Skip to main content

Re: [MW:33025] Qualification of Different group Nos for P1 material having Impact & PWHT

By Materials & Welding
Hi.
In your case YES. Group number is supplementary essential variable

QW-403.5 Welding procedure specifications shall be
qualified using one of the following:
(a) the same base metal (including type or grade) to be
used in production welding
(b) for ferrous materials, a base metal listed in the
same P‐Number Group Number in Table QW/QB-422 as
the base metal to be used in production welding
(c) for nonferrous materials, a base metal listed with
the same P‐Number UNS Number in Table QW/QB-422
as the base metal to be used in production welding
For ferrous materials in Table QW/QB-422, a procedure
qualification shall be made for each P‐Number
Group Number combination of base metals, even though
procedure qualification tests have been made for each
of the two base metals welded to itself. If, however, two
or more qualification records have the same essential
and supplementary essential variables, except that the
base metals are assigned to different Group Numbers
within the same P‐Number, then the combination of base
metals is also qualified. In addition, when base metals of
two different Group Numbers within the same P-Number
are qualified using a single test coupon, that coupon qualifies
the welding of those two Group Numbers within the
same P-Number to themselves as well as to each other
using the variables qualified.
This variable does not apply when toughness testing of
the heat‐affected zone is not required by other Sections.


Thanks& Regards,

(Karthik)
Karthikeyan.S
M: +66-892512282


On Tuesday, April 5, 2022, 02:18:18 PM GMT+7, Karthik <karthik6684@yahoo.com> wrote:


Hi,
No. Group Number is a Supplementary essential variable.


Thanks& Regards,

(Karthik)
Karthikeyan.S
M: +66-892512282


On Monday, April 4, 2022, 04:25:20 PM GMT+7, Brijesh Maurya <brijeshmaurya492@gmail.com> wrote:


Dear experts,
I have query regarding QW-403.5
In my job, both impact & Pwht applicable.

My query is, If I qualify PQR with P1G1 with P1G2, then will my WPS be qualified for P1G1 TO P1G2, P1G1 WITH P1G1 & P1G2 TO P1G2?
Welding process: GTAW+SMAW & GTAW ( 2 PQR)



Regards,
Brijesh Maurya

--
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/CAOBi_ePMA%2BKEJsoZcR3Amts2ZjmTPoQF%2ByWX5_1EEqB44Vwi4g%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

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

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

Re: [MW:10788] ON PLOT PIPING & OFF PLOT PIPING

By Materials & Welding
Piping systems involved for the flow lines and gathering lines from the well head isolation valve to the production facility or processing plant isolation valve are determined as OFF PLOT. ON PLOT defines piping system in the processing plant and production platform. ANSI/ASME B31.4 applies for off plot piping system. B31.4 allows the use of either API 1104 or ASME section IX (as appropriate). However, occasionally, a very small system such as piping within 500 feet of a processing plant (some client also said 400 feet) may be declared B31.3 rather than B31.4. When B31.3 is invoked, only ASME Section IX is used. before you decide which code to use for welding procedure and/or welder qualification for pipe welding, you have to know the design and construction code applicable to the system. Please read far enough into scope and diagram illustrating the application of either B31.3 and B31.4 hope this helps rgds 2011/4/21 pradip kumar sil < pradipsil@gmail.com > Dear all, ...
Post a Comment
Read more