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[MW:2359] Prosity(2G)

By Materials & Welding
Dear all
We used in one of our project E7018G esab brand for welding the P275NL2 steel. In case that in 3G position we get very good result . When we used this electrode(Same lot number) for position 2G we have too much prosity in root pass. We changed the welders 3 times & the final result was same. Can any body tell me the reason? Our group & Esab expert men still searching to find the reason.
 
REGARDS

H.Malekan


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