WELD61Download as PDFGas Tungsten Arc Welding of Pipe Stainless Steel and Carbon Pipe and Tube WeldingWelding TechnologyUndergraduateOverviewCreditsRequisitesCollapse AllPrerequisite WELD-60 PrerequisitePreviously taken WELD-60 is required. Take WELD-60(9052); Minimum grade C,P;