Non-destructive examination is based on acquiring information on the quality of welded seams and composite parts via electro-magnetic and acoustic fields, as well as via various substances penetrating the metal of an examined part. Non-destructive examination methods are chosen with regard to technical requirements to service durability, various restrictive measures, as well as the substantial labor effort needed to process the acquired data. Our certified specialists use the following methods: ultrasonic flaw detection, magnetic particle method and liquid penetrant testing.