In three languages: English/French/German

The International Standard ISO 5817: 2024 „Welding, Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded), Quality levels for imperfections“ lists the quality requirements for production of arc welded steel joints. This international standard is a fundamental technical standard and specifies the basic standardized requirements for the evaluation of welded joints in the various fields of application of welding, such as pressure vessels, metal construction, piping, rolling stock etc. Furthermore, this standard shall be used as the basis for the evaluation of testpieces for the approval testing of welders and welding procedure qualification tests according to ISO-Standard. The reference catalogue is useful for persons with low experience of transposing individual cases to the limits specified in the standard. Using the reference cards, they will learn to interpret correctly various imperfections and their specific representation and to classify them by size to quality levels of the standard. The catalogue may also be used by manufacturers, operators and test bodies as a tool for aid and decision about the evaluation of individual items.