Use of A 234 WPB in the place of A420 Gr.WPL6
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thiru sam
Jan 25, 2011, 8:46:36 AM1/25/11
to Materials & Welding
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.
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.
naran...@aol.in
Jan 25, 2011, 10:29:08 PM1/25/11
to material...@googlegroups.com
Wpl6 fitting need to pass impact test as per code requirements at-56degrreC also it should be fine grained steel. NDM
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
praveen alavandar
Jan 25, 2011, 11:13:21 PM1/25/11
to material...@googlegroups.com
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 <thiruven...@yahoo.co.in> wrote:
> From: thiru sam <thiruven...@yahoo.co.in>
> Subject: [MW:9459] Use of A 234 WPB in the place of A420 Gr.WPL6
> To: "Materials & Welding" <material...@googlegroups.com>
manpreet
Jan 26, 2011, 11:37:43 PM1/26/11
to materials-welding
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
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
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