[MW:3541] Re: PT after root pass in SS welding

Hi,

There are PT pdts available for high temp...i GUESS at around 260 deg C

Best Regards

Vishal Mehta

Supertech Services Ltd.
Plot No A-253, Road No 30-B,
Wagle Indl Estate,
Thane 400 604.

Sent from my Nokia Wireless Device
-----Original Message-----
From: Mohamed Mubarak Syed
Sent: 25/10/2009 17:13:01
Subject: [MW:3539] PT after root pass in SS welding

Recently I faced the following issue and kindly clarify my doubt.
A qualified WPS for stainless steel (A312-TP304H) requires PT after root
pass.
After root pass, its not possible to perform PT immediately unless the
temperature reduces.
But, in normal practice,any weld is not to be stopped before completing hot
pass or 1/3rd of groove thickness.
I got difficulty in following both conditions on single weld joint.

Based on the above different opinions, kindly suggest me the right one with
details.

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