Can client gives deveation for that above case even its mandatory by code.
Sent from my Nokia phone
-----Original Message-----
From: Raghuram Bathula
Sent: 29/09/2010 10:10:04 pm
Subject: [MW:7274] Re: pwht vs hardness
PWHT is mandatory by code for that thickness.
On Sep 29, 9:16 pm, "sunilrathor...@yahoo.com"
<sunilrathor...@yahoo.com> wrote:
> Dear member,
>
> We have an pipe made from sa 672 cl 22 mat having dia 72" and thk 22 mm used for flair line in refinery. The construction people are taking devation not to do pwht on basis that they will check the hardness value if it comes under limets they will not do pwht.
>
> i want to know that is hardness testing is substitute for avoiding sr or pwht
> .
> Its design base is asme 31.3
> n Patel
Worley Parsons, London
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