Menu
The designation specifies a standardized set of general manufacturing tolerances for welded constructions , combining "Class B" accuracy for linear/angular dimensions with "Class F" accuracy for structural shape and position.
| Wrong usage | Correction | |-------------|-------------| | "EN ISO 13920-BF" as tolerance class | Use C/D/E/F only. BF is weld prep code. | | Assuming BF means both tolerance and prep | Split into two references: ISO 13920 for tolerances + ISO 9692-1 for BF | | Using Class B | Not defined – switch to Class C if fine needed | en iso 13920-bf
defines how much a welded beam can bow or a plate can warp during the welding process. American National Standards Institute - ANSI Key Features of the Standard The designation specifies a standardized set of general
While EN ISO 13920 has existed since 1996 in various forms (ISO 13920:1996), the 2023 revision introduces key updates. Compared to DIN EN ISO 13920:1996, the 2023 version has been editorially revised to align with new ISO drafting rules, and all normative references have been updated to their latest editions. The technical content, however, remains fundamentally consistent, ensuring compatibility with existing design and manufacturing practices while modernizing the document's structure. | | Assuming BF means both tolerance and