[MW:2187] RE: 2184] Ovality tolerance

Dear Anil

 

Please refer UG80 of Sec VIII Div 1 You can have 1% ovality is acceptable but It is case to case basis i.e Higher the Dia , it should be kept less than 0.5% even the acceptable tolerance is high b) higher ovality will cause more offset in weld seam

ii) In case of heat exchanger , You can not afford to accept higher ovality . You should target less than 0.25% ,Higher ovality will give problem in tube bundle insertion.

Regards

 

Hegde P.B.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of N Anilkumar
Sent: Wednesday, May 13, 2009 4:04 PM
To: materials-welding@googlegroups.com
Subject: [MW:2184] Ovality tolerance

 

Dear All,   Can anybody tell me, what's the ovality tolerance of cylindrical shell pressure vessel (ID 4300 mm and plate thickness 12mm).   Regards, Anil

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