MQC Labs visual inspections or visual examination of objects, parts or components, is the oldest and most  reliable non-destructive testing method. The test method is applied to almost every product as a quality assurance tool. A visual inspection of a weld joint prior to welding to verify the weld joint design tolerances are being met is the best means of insuring a sound weld. Sloppy weld joint alignment is a primary cause of poor weld quality.  Certified weld inspection (CWI) can successfully detect these unacceptable surface discontinuities without applying expensive test methods.