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[MW:2133] Re: 2115] RE: 2114] preheat SA- 516 gr 70

By Materials & Welding
Hi

No need to preheat such low thickness. Waste of energy and natural resources !
Only see that ur ambient temp. is min.16 degrees celcius.
Preheat for CS materials is required only for thickness greater than 25mm.
Also during rainy seasons if u preheat slightly @100degrees C,
it helps in removing moisture absorbed by the plates !

Regards

Prem Nautiyal
Godrej,Mumbai.

On Fri, 08 May 2009 09:36:21 +0530 wrote
> Thickness are    5/8    3/8  5/16 and    
>
>
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>De: materials-welding@googlegroups.com
>[mailto:materials-welding@googlegroups.com] En nombre de Bathula Raghuram
>(Mumbai - PIPING)
>Enviado el: mircoles, 06 de mayo de 2009 11:18 p.m.
>Para: materials-welding@googlegroups.com
>Asunto: [MW:2115] RE: 2114] preheat SA- 516 gr 70
>
>
>
>What is the thickness involved? And what is your atm temperature?
>
>
>
>  _____  
>
>From: materials-welding@googlegroups.com
>[mailto:materials-welding@googlegroups.com] On Behalf Of SAUL VASQUEZ T.
>Sent: Thursday, May 07, 2009 6:20 AM
>To: materials-welding@googlegroups.com
>Subject: [MW:2114] preheat SA- 516 gr 70
>
>
>
>
>
>Dear   all
>
>
>
>We are making  API 650 steel tanks with  steel ASTM  516 gr70 and our client
>requests that preheat to 70C - 100C is this correct? The API 650   code
>section 7-1 that says that  preheat at 10C
>
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>
>thanks all
>
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>Cordial saludo
>
>Kind regards
>
>Saul Vasquez T.
>
>--------------------------------
>
>INGETANQUES LTDA
>
>Cra 8B N 190-81  
>
>Tel. 57 (1) 6794382  Fax 57 (1) 6723793
>
>CEL. 320-3469363  y  316-5388051
>
>Bogota D.C.    Colombia.  http://www.ingetanques.com/
>
>
>
>P Antes de imprimir este mensaje, asegrese que es necesario. El medio
>ambiente est en nuestras manos. No malgastes los recursos. Ten en cuenta
>que son limitados.
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>>
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PREM S NAUTIYAL

CELL : 9820313278
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