WELDING PER P8TF4
Approved Welding Per P8TF4
Certified By: General Electric
Specification Title: Resistance Spot, Seam, Projection and Capacitor Discharge Welding
Short Description: This specification establishes the requirements for spot, seam, projection and capacitator discharge welded joints in products of iron, nickel, cobalt, titanium, aluminum and magnesium base alloys. CLASS A welds do not include welds in foil thicknesses (0.008 inch -- 0.20 mm -- or less).