The South Island's largest and one of New Zealand's best NDT companies, Southern QA are ISO 9002 accredited. Technicians are qualified in UT, MT, PT, RT (X and gamma)and welding inspection. Other specialties include holiday testing of coating systems, ultrasonic bolt tension measurement and third party inspections. Current and recent inspection work includes boiler and pressure vessel manufacture, hydro-electric plant, petrochemical tanks and pipelines, structural steelwork, steel and iron castings, dairy industry plant etc. Staff are also experts in welding procedure development and approv