Re: [MW:18765] AWS D1.1-2010- Table 4.1

Hi, Tarek,

Just to clarify, why do you say that a pipe welded to a base plate is fillet weld. You can also have a Single Bevel CJP or PJP or if accessible you can also have a single V. It need not always be Fillet Weld.

However Mr. Anban is asking Note b on table 4.1 the term "circumferential welds" in pipes above 600 mm OD means on girth welds (Butt Joint) or inclusive of Fillet

Answer.

Note b  is only referring circumferential welds for CJP and PJP and FOR BUTT JOINTS ONLY. For Fillet weld for pipe there is no diameter restriction.

Take Note that this table is ONLY for POSITION QUALIFICATION and to answer you second question and does not state anything about diameter restrictions.

Having a PQR for 1G/2G/3G/4G. Please take note that these positions are qualified by plate, hence you have to refer to 4.13.3,3 which says that if a plate is tested as per sketch 4.25(b) with backing or back gouging, then you are qualified for T K Y Joints on pipe over 600mm.

Hope you have a better idea now.

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From: Tarek Yehia <t.yehia2009@gmail.com>
To: materials-welding@googlegroups.com
Sent: Tuesday, 24 September 2013, 16:33
Subject: Re: [MW:18759] AWS D1.1-2010- Table 4.1

Dear Anban,

for pipe welding to base plate; this is fillet weld so we can't refer it to note "b".

Note "b" is limited to CJP and PJP like pipe to pipe welding.

Yes, if qualified WPS/PQRs of 1G/2G/3G/4G position(s) can be used to weld any diameter of fillet weld.

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Best regards,
 
Tarek Yehia

On Tue, Sep 24, 2013 at 2:34 AM, Anban <gane2478@hotmail.sg> wrote:

Dear Experts


Table 4.1- WPS/PQR Qulafied x Production Weld Position Qualified Range.

Note "b"- Qualifies for circumferential welds in pipes equal to or greater than 24 in [600 mm] nominal outer diameter

Question - Does "circumferential welds" means only CJP/PJP-girth and seam butt weld joint on inclusive of fillet weld joint,: for example Pipe welding to a base plate?

In my opinion only apply for "only girth and seam butt CJP/PJP weld joint".

My understanding- WPS/PQRs qualified in any of these 1G/2G/3G/4G position(s) can be used to weld any diameter of Circumferential Fillet weld.


Pls advise

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