[MW:864] Re: Site welding & heat treatment for ASTM A 387 Gr 22 CL1

Best would be provide electrical heating pads for the joints so that the minimum preheat can be maintained during the entire welding cycle

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Date: Wed, 11 Jun 2008 23:30:04 -0700
From: tagore.tbn@gmail.com
To: materials-welding@googlegroups.com
Subject: [MW:860] Re: Site welding & heat treatment for ASTM A 387 Gr 22 CL1

Basically Cr-Mo steels need Pre heating and  post heating when ever there are breaks for lunch, tea , shift changes. Interpass temperature maintenance is a MUST . Therfore even in site , the whole weld zone shall be in an enclosed environment so that there are no wind  effects . For that matter any welding in an open wind environment is not advised.
Regards,
Tagore

On Wed, Jun 11, 2008 at 8:15 PM, <Sudipto_Banerjee@fwuk.fwc.com> wrote:

Pls. let me know if there should be any potential concerns of a reactor
made of ASTM A 387 Gr 22 CL1 in SITE ASSEMBLY with regards to welding, site
heat treatments and others.
If there is, then pls. let me know what are the points to be taken care by
the vendor.

Thanking you.


Best Regards,
Sudipto Banerjee
Man. no. B 4512
Equipment Engg. Department
Office no. 0091-(0)44-6622 2947
Mobile 1 (official) : 0044- 0 7733287865
Mobile 2 (personal) : 0091-9930005960


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