Re: [MW:20704] RF of ASME B16.5 Flanges

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They do not meet the requirements of B16.5 as far as the dimensions are concerned. They may not meet also the temperature / pressure ratting since the cladding process may alter the flange properties.
The dimensional issue is not a problem. The manufacturer has to provide evidence that the cladding process has not altered the temperature/pressure ratting

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Dr. Georgios Dilintas

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Josnit ---29/04/2014 15:22:54---Dear Experts, We have fabricated one vessel as per ASME Section VIII Div. 2 Edition 2010,

From: Josnit <nithindsilva4u@gmail.com>
To: materials-welding@googlegroups.com
Date: 29/04/2014 15:22
Subject: [MW:20694] RF of ASME B16.5 Flanges
Sent by: materials-welding@googlegroups.com

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Dear Experts,

We have fabricated one vessel as per ASME Section VIII Div. 2 Edition 2010, Add. 2011. The vessel is internally cladded with Alloy 625 for corrosion resistance purpose. Cladding thickness is not considered in the design. The flanges were ordered as flat face and corrosion resistance overlay was applied, and machined to RF required dimensions as per ASME B 16.5. Reference to the attached interpretation, when the RF was made with different material (corrosion resistance cladding), does these flanges are categorized as non standard flanges?? Please give your opinion on the same.

Regards,

Josnit

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