Re: [MW:30778] Unequal wall thickness in piping

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Dinesh Somwanshi

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Apr 16, 2020, 11:30:23 PM4/16/20
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It's shall not lowered down to design thicknesses.

You may do smooth  tempering to match if above meets.

Dinesh

On Thu, Apr 16, 2020, 19:31 QA/QC <adnan...@gmail.com> wrote:
Hello everyone 

im asking for any information about the maximal thickness to weld between two different wall thickness  from  B31.3 or b.16.25 

in my case we want to weld  12'' THICKNESS 25.4 WITH 12.7 ITS POSSIBLE RE-SCHDULING THE INTERNAL THICKNESS FOR 12MM OR THER IS A MAXIMUM THICKNESS LIMITS 

BEST REGARDS

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atul khatri

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Apr 17, 2020, 2:32:36 AM4/17/20
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you can weld two dissimilar thick pipes and fittings by making proper transition of higher thickness to lower thickness.
Transition slope should be 1:3. Please refer figure UW-13.1 of ASME VIII DIV 1 for better understanding.

Best regards
Atul Khatri


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james gerald

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Apr 17, 2020, 6:56:27 AM4/17/20
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Please find snap shot of ASMEB 31.3 below.

Inline image


ID Alignment may be done as per below sketch



Inline image

OD variation in Thickness may be Tapered to a slope of 1:3 (thickness : Length)


Thanks & Regards

J.Gerald Jayakumar




On Friday, April 17, 2020, 05:13:56 PM GMT+7, Adnan Ziad <adnan...@gmail.com> wrote:


more explaination please if you can 

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George Dilintas

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May 9, 2020, 11:31:55 PM5/9/20
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Read QW-202.4 in ASME IX
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