Visual Inspection How to Measure a Fillet Size Weld Defects Cracks Cavities Porosity Wormholes Shrinkage Voids Inclusions Slag Tungsten Oxide Incomplete Fusion Incomplete Penetration Incorrect Shape Undercut Overlap Excess Weld Reinforcement Underfill Concave Root Surface Melt-Through Arc Strikes Splatter Joint Design and Types of Welds Parts of a Weld Types of Welding Welding Positions and Symbols Misc.
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