The core activity of KALLA AG includes services in the fields of welding technology, testing technology (NDT) and assembly, particularly: non-destructive material and component testing, installation and assembly of stainless steel piping, WIG orbital welding technology, consulting and monitoring in welding and testing technology, supplier audits and documentation (FAT, SAT, DQ, IQ), and trade in goods for the NDT industry. Specifically in the field of testing technology, the company offers various services, such as visual testing (VT), dye penetrant testing (PT) and magnetic particle testing.