En Iso 13920-bf

This class specifically governs the geometric tolerances of the weldment, including how straight a part is or how flat a surface must be. 2. Tolerance Tables for Class B (Linear & Angular)

| | EN ISO 13920 Tolerance Class B: Limit Deviation (± mm) | | :--- | :--- | | 2 to 30 | ± 2 | | >30 to 120 | ± 2 | | >120 to 400 | ± 3 | | >400 to 1000 | ± 4 | | >1000 to 2000 | ± 6 | | >2000 to 4000 | ± 8 | | >4000 to 8000 | ± 10 | | >8000 to 12000 | ± 12 | | >12000 to 16000 | ± 14 | | >16000 to 20000 | ± 16 | | >20000 | As agreed upon between parties. | en iso 13920-bf