En Iso 13920-bf !!exclusive!! -

Note: For small parts, the tolerance is looser because relative distortion is higher.

According to technical guides from Scribd and Modulus Metal , the permitted deviations for Class B depend on the size of the component: Range of Nominal Size (mm) Linear Tolerance (± mm) Over 30 to 120 Over 120 to 400 Over 400 to 1,000 Over 1,000 to 2,000 en iso 13920-bf

When inspecting a part with "EN ISO 13920-BF": Note: For small parts, the tolerance is looser

Critically, this standard focuses on the macro-level geometry of the welded structure, which differs from , which governs specific weld quality, such as porosity or cracks. Verification and Compliance Testing Note: For small parts