DIN EN 16407-2 E:2012-04 Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 2 : Double Wall radiographic inspection
2018DIN EN ISO 20769-2:2018 Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 2: Double wall radiographic inspection (ISO 20769-2:2018); German version EN ISO 20769-2:2018
2014DIN EN 16407-2:2014 Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 2 : Double Wall radiographic inspection; German version EN 16407-2:2014
1970DIN EN 16407-2 E:2012-04 Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 2 : Double Wall radiographic inspection