DIN EN 16407-1-2014 无损试验. 采用X和伽玛射线对管内腐蚀和沉积的射线检查. 第1部分: 切线射线检查; 德文版本EN 16407-1-2014
Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 1: Tangential radiographic inspection; German version EN 16407-1:2014