Post Weld heat treatment is governed by thickness of base pipe / Run
Pipe and as per table 331.1.1 of ASME B 31.3.
In most of the cases Run Pipe thickness is greater than or Equal to
Branch Pipe.
If you're run pipe falls under PWHT category than u have to do the
PWHT for that joint.
Hope Every body agrees with me.
Regards
On Feb 8, 6:29 pm, Ali Asghari <asghari...@rocketmail.com> wrote:
> Dear All
> According to ASME B31.3 fig328.5.4.D( SKETCH1) the thickness of weld deposit is
> calculated acc to 331.1.3.
> Now in weldolet fittings that have unequal thicknesses in both of ends. Tb is
> equal to thicker or thinner thickness?why?
> we need to know for calculating of governing thickness for PWHT.
> regards.
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