*For back gouging on weld seam and notching at the back *Applicable to various metal work piecess for carbon arc air gouging 1.For back gouging on weld seam and notching at the back,effectively gouge the defects from steel product and weld seam2.Applicable to various metal workpieces for carbon arc air gouging3.Remove weld reinforcement,seal off access ramp4.Without plasma cutting machine,it can ...