we can remove the purging once root and hot pass is compete,temperature of metal will not oxidised inside ,when welding is in progress.
sujay
+97507217119
On Sat, Oct 16, 2010 at 9:14 AM, John Hardcastle <jhardcastle@euromechanical.com> wrote:
When can we remove backing gas purge from non-ferrous pipe joints.
Can we remove the gas purge once the root run is complete, or once the root and first hot pass is complete.
We leave the gas purge on until the joint is capped and i am sure this is wasting gas.
John Hardcastle Fabrication Manager
Euro Mechanical Contractors Company Factory P.O. Box 46153
Abu Dhabi
United Arab EmiratesPhone: +971 2 550 08 99 Fax: +971 2 5501898 Mobile: +971 50 4445873 Email: jhardcastle@euromechanical.com www.euromechanical.com
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