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Due to the new letter code for identifying the gas type according to ISO 10225, ISO 7291 had to be modified accordingly. The responsible German standardization committee is Working Committee NA 092-00-07 AA "Ausrüstung zum Gasschweißen, Schneiden und verwandte Prozesse" ("Equipment for gas welding, cutting and allied processes") of NAS.
This document replaces DIN EN ISO 7291:2011-03 .
This document has been replaced by: DIN EN ISO 7291:2021-03 .