Welding defects are flaws that can form at any stage of the welding process
, and when they do, they can compromise the intended use of a weldment. They are deviations in size and shape from the technical and design requirements. Although some defects are allowed since they do not compromise set standards and quality, others are unacceptable.
Flaws that do not compromise the weld are called weld discontinuities. However, if too many of these discontinuities exist, they are classified as defects and are subject to rejection.
While it is virtually impossible to create a defect-free weld, welders must reduce the occurrence of defects to prevent material loss and maintain the intended quality. And since every welder's goal is to avoid having their welds rejected, everyone should learn the types of defects that can happen and how to avoid them.