2015LST EN ISO 23277:2015 Non-destructive testing of welds - Penetrant testing - Acceptance levels (ISO 23277:2015)
2010LST EN ISO 23277:2010 Non-destructive testing of welds - Penetrant testing of welds - Acceptance levels (ISO 23277:2006)
2000LST EN 1737-2000 Determination of shear strength of welded joints of reinforcement mats or cages for prefabricated components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure