Re: [PipingDesign] Valve material

From: <M.>
Date: Tue Jan 15 2008 - 13:26:00 EST

I also would like to add to Sajit below clarifications that in case the service is sour, then, i recommend that the valves wetted parts to comply with NACE MR-0175

Khalid Mahmoud
Saudi Aramco
Jeddah Refinery

> The standard is ASTM. You can buy them on the net.
>
> ASTM A181 is for CS forgings for Gen purpose piping,
> has 2 classes, 60 and
> 70, corresponding to the SMTS. A105 is also same,
> can be used for higher
> temperatures also, corresponds to A181 class 70 in
> strength.
>
> Why is the ball using metal seats? 316SS. What is
> you service, pressure,
> temperature?
>
> 316SS is a generic description of the material
> grade.
>
> A182 is the product form, alloy steel forging.
>
> The vendor's offer should be acceptable.
>
> Sajit
>
> .where can I check this. I mean
> any standard.
>
>
>
>
> Save a tree...please don't print this e-mail unless
> you really need to.
>
>
Received on Tue Jan 15 13:26:00 2008

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