Re: [MW:11937] Welding Process Restriction

WPS B is also accepted, if the deposited weld metal of a A106 Gr B pipe 4" sch 40 (GTAW process) is 2 (two) times from deposited GTAW in PQR B. the thing that you need is just re-write your welding procedure.

rgds,

2011/7/26 Dinesh Somwanshi <som.din@gmail.com>

you can use WPS A , as thickness & diameter range within an range & requirements.

regards

dinesh

On Tue, Jul 26, 2011 at 8:11 AM, Raghuram Bathula <raghurambathula@gmail.com> wrote:

no restriction, you can use as there is no diamter restriction for procedure qualification in ASME.

On Tue, Jul 26, 2011 at 6:13 AM, Candice Law <candice.law@penergy.com.my> wrote:

 

Expert,

I have a 2 WPS qualified range as below:

1)     WPS A – Qualified Thickness Range from 1.6mm – 11.08mm ; diameter range is all diameter. (Gtaw process)

2)     WPS B – Qualified Thickness Range from 4.8mm – 22.0mm ; diameter range is all diameter. (Gtaw + Smaw process)

Both are qualified under ASME IX and for material with P No.1

 

Now, I need to weld a A106 GrB pipe 4" Sch40, can I use WPS A? Full Gtaw for 4" pipe? Any restriction for welding process pertaining diameter as in ASME IX?

 

Please Advice.

 

Thanks

 

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