then what is back gouging? pls.see my last mail for the explanation for this mail.
Thanks & Regards,
(Karthik)
Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282
--- On Sat, 4/2/11, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:
From: kannayeram gnanapandithan <kgpandithan@gmail.com>
Subject: Re: [MW:10580] RE: 10463] Backing
To: materials-welding@googlegroups.com
Cc: "John Henning" <jhenning@deltak.com>
Date: Saturday, April 2, 2011, 7:25 PM
Mr Karthik see the clarification, it is a back weld(double side), and i go with john Pandithan, AWS-CWI,CSWIP 3.1 In-Charge/Welding Technology Cethar Vessels Ltd Trichy
On Wed, Mar 23, 2011 at 8:11 PM, John Henning <jhenning@deltak.com> wrote: YES – it is welding with backing. See QW-402.4, non-essential variable for both SMAW and GMAW and an essential variable for welder performance qualification for both processes per QW-416. "QW-402.4 The deletion or the backing in single welded groove welds. Double welded groove welds are considered welding with backing." John As per ASME SEC IX ,we qualified PQR(SMAW/GMAW process) with 8mm/10 mm thickness plate full penetration welding( Root Land:1mm to 1.5 mm) as root ,hot and cap welding and then back/root side of plate was grounded(approx 2mm) to sound metal and one pass of cap welding was done in root side. My question is whether is method is considered as welding with backing or with out backing it is considered as backing. how? Regards, kvr --
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