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Anonymous Poster

Chemical Composition of Reheater Pipe

08/04/2009 2:58 AM

Can any one tell the composition of A 672 B 70 Cl32 ?This is the pipe we used for reheater.
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sb
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#1

Re: Chemical composition

08/04/2009 3:31 AM

I think the ASTM A672 requires material ASTM A515 Gr 70 cl 32- is normalised, radiographed and pressure tested.

You have to go through the standard for the details.

(C 0.27 max to 0.31 max depending on thickness, Si 0.15 to 0.40 and mn 0.85 to 1.20)

but the chemical is not sufficient. Try to get the copy of the ASTM Std (ERW EFW/SAW Pipe for high pressure service)

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atorroja
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#2

Re: Chemical composition

08/04/2009 5:46 AM

Reheater? Temperature? Pressure? Ask for T22 or T91. but ever SMLS.
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sb
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#3
In reply to #2

Re: Chemical composition

08/04/2009 9:15 AM

Got a good point. Missed It. The OP should check the applicability of the A672 for the application and the code conformity.

GA for a valid doubt.

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