Welding inspection typically consists of a series of quality control checks carried out by welding inspectors. It ensures welded joints meet required levels of quality and are fit for purpose. A range of welding inspection techniques may be applied, depending on factors such as joint configuration, specific defects of interest, material type/thickness and whether in shop or on site.

CSWIP welding inspection certificates are often specified as contractual requirement by employers as it provides assurance of the competence of an inspector, and therefore the quality of the weld.