References
- ‘Industrial radiography. Radiograms of butt welds in butt steel joints. Quality requirements and manufacturing guidelines’ Polish Standard PN-72/M-69770
- ‘Non-destructive examination of welds. Radiographic examination of joints’ prEN1435
- ‘Non-destructive testing. Industrial films for X-ray testing. Part 1: ‘Classification of film systems for industrial X-ray testing’ DIN EN 584–1
- Jezierski , G . 1993 . ‘Industrial radiography’ , Warsaw : Publ WNT .
- Czuchryj , J and Wnek , T . 1996 . ‘Non-destructive testing of welded joints’ , Gliwice : Publ Instytutu Spawalnictwa .
- Dziuba , S . 1997 . ‘Investigation into the process of welding thermoplastics by hot air’ , Gliwice : The Welding Institute . Research Report No. AC-120