Skip to main content

Re: [MW:35709] Digest for materials-welding@googlegroups.com - 4 updates in 2 topics

By Materials & Welding
Thanks to all for good reply,
Understood considering P1 material wps required to cover maximum thickness as per QW 202.4(b).
But i could not understood why we are not considering the same for SRN nozzle? Here also we are not preparing any bevel on sight glass plate thickness 40mm.


Israr Ahmed Noor Mohammed
+919930308261

On Sat, 28 Jun, 2025, 6:05 pm , <materials-welding@googlegroups.com> wrote:
israr ahmed <ahmedisrar.nm@gmail.com>: Jun 28 09:13AM +0530

dear team
What should be the range of qualification if we are welding sight glass
thickness 40mm with shell of 10mm?
 
Israr Ahmed Noor Mohammed
+919930308261
Pravin Kurade <pravinkurade@gmail.com>: Jun 28 01:09PM +0530

In this case it's dissimilar thickness and considering its P8 you need 20
mm thk welding procedure which will cover both the range I assume impact
test not required.
*Thanks with Regards....*
 
*Pravinkumar Kurade*
*ASME Authorized Inspector (National Board-15396), *
*Repair Inspector (NBIC) R-Endorsement,*
*PED Inspector, DOSH Inspector,*
*B.E. (Mech.), Lean Six Sigma Green Belt, *
 
*C-SWIP-3.1 (Welding Inspector - UK)ASNT Level II - MT, PT, RT , VT, LTMob
: +91 8484848029*
 
Michael Tino <michaeltino23@gmail.com>: Jun 28 12:32PM +0400

If it's P8, won't a PQR qualified on 6mm thick cover the welding of this
dis-similar thickness (QW-202.4)considering welding deposit thickness of
10mm?
Regards,
Michael
 
On Sat, Jun 28, 2025 at 12:02 PM Pravin Kurade <pravinkurade@gmail.com>
wrote:
 
Harish Gandhi <hdgandhi52@gmail.com>: Jun 28 11:04AM +0530

In my opinion square tube / pipe shall be considered as plate welding which
involves overhead, vertical and flat welding. Procedures qualifying above
Positions and required thickness may be used for welding. In pipe welding
direction for welding is continuously changing and requires more skill
hence diameter limits are given in code.
Regards
 
Harish Gandhi
 
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to materials-welding+unsubscribe@googlegroups.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 visit https://groups.google.com/d/msgid/materials-welding/CAEJoza%2BqsbYeW%3DcGy0qsKKjR%3DT1YP8Drvs7sOTrhgHuvanoKGw%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

Re: [MW:34105] SA266 GR4N 4 Cycle SPWHT

By Materials & Welding
Hi,  You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this.  Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime.  Again, these simulated no. Of cycles shall be specified in MTC.  The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case).  One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example.  In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...
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

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