DIN EN ISO 20769-1:2018 无损检验. X射线和γ射线对管道腐蚀和沉积物的射线检验. 第1部分: 切向射线探伤(ISO 20769-1-2018); 德文版本EN ISO 20769-1-2018
Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 1: Tangential radiographic inspection (ISO 20769-1:2018); German version EN ISO 20769-1:2018