Skip to main content

[MW:23051] FW: 23048] Re: Local PWHT of butt welds in piping

By Materials & Welding

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.5961 / Virus Database: 4354/9906 - Release Date: 05/30/15

Hi Vishwas,
 
PWHT cycle ,T& T, rate of heating /rate of cooling should be as per the piping design codes, e.g B-31.1 or 31.3 or others as  specified in the drawings or specifications.
 
AWS D-10.10 should be followed also as a guiding document for setting up equipments, e.g, heating pads, thermocouples,.....to facilitate the PWHT. In fact you need to to look at D-10.10 for detailed  guidelines, assuming these pipes would not be heat treated in in furnace.
 
Thanks
 
 
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Engineer/Specialist
Ontario, Canada
pgoswami@quickclic.net
pradip.goswami@gmail.com
 



On Tuesday, May 26, 2015 at 10:19:30 AM UTC+5:30, Vishwas Keskar Welding Manager Pune India wrote:
For long piping(Carbon steel, alloy steel), butt welding of large diameter(219mm OD TO 606mm OD, THK - 18.26mm to 42 mm )pipes is carried out. 
For PWHT of these butt welds, what are the parameters shall be considered for effective PWHT?

--
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 post to this group, send email to materials-welding@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/4a044795-1847-4745-a576-efbc881ee423%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

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

[MW:36169] Cold Bending Qualification

By Materials & Welding
Dear Experts,  Can anyone share the inspection requirements or a qualification procedure for cold bending? Our client spec states only the requirements for induction bending and would like to know your opinion on the cold bend inspection requirements. The code of construction is B31.3, Max. 5D bends, A106 SS 316L.  Thanks in Advance. -- 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/1be61cc3-e9c9-4a5f-834d-e8485e248432n%40googlegroups.com .
Post a Comment
Read more

[MW:30043] Weep hole

By Materials & Welding
If weep hole is not provided in dummy pipe before welding What will happen??? -- 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/da251ee6-fa7f-4851-b876-cdb3834ae341%40googlegroups.com .
Post a Comment
Read more