9/21/2017 · GI pipes can be welded with the simplest E6010 electrode in arc welding. Main problem is the tin coating on the pipe in heat affected zone evaporates and corrosion resistance in the area is affected. Main purpose of galvanizing the pipe is lost as selective.
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Welding with excessive current not only lowers X-ray soundness, but also causes increase of spatter, under-cut and insufficient slag covering. •Dry the electrodes at 70-100 degrees C for 30-60 minutes before use. Excessive moisture absorption lowers usability and may result in some porosities.
