Re: [MW:27639] Preheat temp lower limit from min temp teg

for root with GTAW- u can upto 150deg celius not below Mf temp

As per ASME Section 1 and 8, preheat is not mandatory whereas in B31.1, it is mandatory

For fill pass 197 is ok, but ensure that Post Heating is properly is carried out.

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Thu, Apr 5, 2018 at 2:02 PM, 'smkabeer ahamed' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Dear sir

Root run GTAW

Filler run SMAW

ASME Section 1 and 8

600MW coal fired Boiler

Regards

S.M.Kabeer Ahamed

Sent from Yahoo Mail on Android

On Thu, Apr 5, 2018 at 11:58 AM, Kannayeram Gnanapandithan

<kgpandithan@gmail.com> wrote:

what is welding process and code of contrustion

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Wed, Apr 4, 2018 at 2:11 PM, 'smkabeer ahamed' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Dear sir

Item description evaporator outlet header

Material Sa335 P91

Preheat temp 205 deg c min

Process. Induction heating

During welding preheat temp comes to 197 deg c. Please clarify either it is accepted or not.

If it is Accepted please provide relevent standards.  

Thanks and regards

S.M.Kabeer Ahamed

Quest Pvt Ltd Bangalore

9168605601

Sent from Yahoo Mail on Android

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