Re: [MW:0] Problem of PWHT

No PWHT is required after welding of butterer AS to CS.

 

CS will not be able to withstand the PWHT temp of AS, so not to be post weld heat treated.

 

 

Reg,

Jaydeep 

On Fri, Dec 24, 2010 at 2:35 PM, joshi jaydeep <jaydeep.p.joshi@gmail.com> wrote:

Follow the following Steps if it is practically feasible:

 

1. Carry out buttering of your P11 pipe of ER70S-B2L
2. Carry out Local PWHT of buttered pipe

3. Do welding of Buttered pipe with CS pipe using the same consumable.

 

Reg,

Jaydeep

 

On Fri, Dec 24, 2010 at 1:58 PM, vivek m <vivekmohan007@gmail.com> wrote:

On a mechanical CS  line after a 0.75" valve instrumentation impulse
line is coming which is of P11 material...........welding done using
ER70S-B2L. .....and now can I do PWHT to that joint which is to b done
as per procedure of alloy steel...since this joint is between AS to CS
is there any problem in doing PWHT

On 12/24/10, Yogesh kumar <yogeshandpini@gmail.com> wrote:
> Hi vivek
>
> Will you please elaborate more your CS/AS joint configuration  is not
> getting clear to me??
> yogesh.
>
>
> On Fri, Dec 24, 2010 at 9:25 AM, vivek m <vivekmohan007@gmail.com> wrote:
>
>> The impulse line is of P11 material and it has to be post heated...i
>> want to knw d problems dat may occur to the 0.75 joint  between cs and
>> as
>>
>> On 12/23/10, Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com>
>> wrote:
>> > Generally Impulse lines are outside scope of ASME B31.3 and don't
>> > require
>> > PWHT. Even if it is designed by B31.3 it doesn't require PWHT as
>> thicknesses
>> > low, , unless it is a contractual requirement
>> >
>> > -----Original Message-----
>> > From: materials-welding@googlegroups.com
>> > [mailto:materials-welding@googlegroups.com] On Behalf Of vivek m
>> > Sent: Thursday, December 23, 2010 9:34 PM
>> > To: materials-welding@googlegroups.com
>> > Subject: [MW:8914] Problem of PWHT
>> >
>> > Dear all,
>> >  one of my P11 impulse pipe (0.75") is connected to a CS  0.75" valve
>> > which comes with big bore CS line (all as per drawing)......now shall
>> > i do pwht to that joint  ? If done will there be any problem to that
>> > joint ...please give me a detailed answer.
>> >
>> >
>> > Filtered by Hosted Filtering
>> >
>> >
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