Re: [MW:25354] LTCS PQR

ER70S-6 can not be used, because impact test limitation.

Regards,

Himan Nikdin

Sent from my iPhone

On Sep 8, 2016, at 11:50, Himan Nikdin <himan.nikdin@outlook.com> wrote:

Hi buddy!!!

Since your joint is between P.No 1-Gr No 1 (A333-Gr6) and P.No1-Gr No2 (A350 LF2) and impact test is mandatory (cause Gr No to be essential variable) so your PQR shall joint between P.No 1-Gr No 1 & P.No1-Gr No2. I think most available material to meet above-mentioned criteria is SA-516Gr70 to SA-516Gr60.

your quarries;
a) If you do not have other thicknesses so thickness 10mm is so enough!.
b)Yes.
c)GTAW filler; ER-80SNi(if NACEMR0175/ISO15156 is not applicable)/SMAW filler: E7018-1.

Regards,
Himan Nikdin

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Date: Wed, 7 Sep 2016 22:21:03 -0700
From: mustaqnk@gmail.com
To: materials-welding@googlegroups.com
Subject: [MW:25350] LTCS PQR

Dear Experts 

I am new for this job please help me 

for PQR of LTCS

1) required thickness min is 6.35mm &  dia is 12 inch

2) design press = 20kg/cm2

    design temp  = -45.6/37.8 degreee celcius

     op press      = 20 max

     op temp       = -40 degree celcius

3)  material is pipe - A 333 GR 6(P1 &G1) and flange - A350 GR LF2 RF

4) service is LPG plant- Relief and blow down

now please suggest me 

 a) what is is the size of the test coupon can be selected(dia with schd) where can i find the exact length of weld required to carry out mechanical testing for this PQR?

 b) is it possible to carry out the PQR for pipe to flange joint 

 c) what consumable can be selected for this if GTAW & SMAW ?

 

Regards

AHMAD

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