Re: [MW:9509] Use of A 234 WPB in the place of A420 Gr.WPL6

Dear Thiru,

Completely agree with A. Pravean, also would like to add few points that A234 WPB is not good choice for -45 deg, usually limited upto -20 deg, A420 WPL6 is a perfect choice at this temp., with this material used as fitting, A333 Gr.6 is a good choice for piping.

Regards
Manpreet Singh



On Wed, 26 Jan 2011 09:45:13 +0530 praveen alavandar wrote
>Dear Thiru,
>
>Your were right.
>
>Assuming your service to be B31.3, A234 Gr.WPB will be a material classified under curve B of Fig.323.2.2 A of ASME B31.3
>
>Looking at your service condition (Design minimum -45 Deg.) this material cannot be used for the said service.
>
>You need to use A 420 WPL6 for your service.
>
>Regards,
>
>A.Praveen
>Welding Engineer
>Muscat
>
>--- On Tue, 1/25/11, thiru sam <thiruvenkatam_be@yahoo.co.in> wrote:
>
>> From: thiru sam <thiruvenkatam_be@yahoo.co.in>
>> Subject: [MW:9459] Use of A 234 WPB in the place of A420 Gr.WPL6
>> To: "Materials & Welding" <materials-welding@googlegroups.com>
>> Date: Tuesday, January 25, 2011, 7:16 PM
>> Dear All,
>>
>> Can somebody advice me about the use of A234 WPB
>> fittings in the
>> place of A420 Gr.WPL6 for the LPG line.
>>
>> I hope,A234 WPB is for medium and elevated
>> temperatures,whereas A420
>> is for lower operating temperatures. and moreover A420 is
>> having
>> impact test properties.
>>
>> So i hope we cant use the A234 WPB in place of A420,even
>> though
>> tensile properties are same.
>>
>> In my project,Design Temperature of LPG line is -45 deg to
>> +85 deg.
>>
>> Is my statement is correct?
>>
>>
>> Regards,
>>
>>
>> Thiru.
>>
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>
>
>
>
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