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[MW:2934] Re: Welding for High Pressure & large thickness

By Materials & Welding
Rajesh,
The welding process shall be preferred  as SMAW +SAW.
Root with SMAW and then filling and capping with SAW.
Since the Thickness is more then you can go for 3 Degree bevel angle J bevel preparation. You can divide the thickness 3/4th OD and 1/4th for ID double groove.
So the double U type groove will form. Then back gauging up to sound metal and welding after completion of NDT from other side.This will help you to minimize the width of the weld seam. This will results in less welding consumables and heat input for the joint.

Regards,

Nilesh Pathare.
ASNT NDT Level III ( UT, MT, PT, RT,VT)
CSWIP 3.1 Welding & CSWIP  B GAS Painting.
Institute of Advanced NDT Technology, Navi Mumbai.
email: iantmumbai@gmail.com
URL: www.sharptestnde.com



On Fri, Aug 14, 2009 at 9:59 AM, Rajesh <mrinmeghnsk@gmail.com> wrote:

Dear All,

I need to have longitudinal weld for a shell of Heat Exchanger header
(TEMA-R). Thickness of Shell is around 70mm.ID - 600mm. Pressure
200Bars.

Let me know the configuration of Weld.

Rajesh Bhavsar





--
Best Regards,

Nilesh Pathare

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