(titled “Welding — General tolerances for welded constructions — Dimensions for lengths and angles; shape and position”) specifies general tolerances, permissible deviations and requirements for weldments' dimensions, shapes and positions when no specific tolerances are given in contract documents.
If you saw "EN ISO 13920-BF" on a , it is likely a typo or shorthand used by a designer. The correct standard for edge preparations is ISO 9692-1 (or EN ISO 9692-1). EN ISO 13920 only covers general tolerances (linear, angular, flatness, etc.), not weld preparation shapes. en iso 13920-bf
Q: Can EN ISO 13920-BF be used for non-welded constructions? A: No, the standard is specifically designed for welded constructions and parts. Other standards may apply to non-welded constructions. EN ISO 13920 only covers general tolerances (linear,
The code "BF" consists of two distinct tolerance classes defined in ISO 13920 : Other standards may apply to non-welded constructions