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)

Stop guessing and start specifying. Are you using BF for your general steelwork, or do you prefer a tighter tolerance? en iso 13920-bf

Tolerances for lengths, such as external sizes, internal sizes, and step sizes. Range of nominal sizes (mm) Tolerance (mm) ±1plus or minus 1 ±2plus or minus 2 120 to 400 ±2plus or minus 2 400 to 1000 ±3plus or minus 3 1000 to 2000 ±4plus or minus 4 2000 to 4000 ±6plus or minus 6 2. Shape and Position (Class F) Tolerances for straightness, flatness, and parallelism. Range of nominal sizes (mm) Tolerance (mm) Up to 1000 1000 to 2000 2000 to 4000 4000 to 8000 Application in Industry This standard is commonly cited in technical drawings for: This class specifically governs the geometric tolerances of

Headline: Why your welds are great, but your assembly still doesn't fit. Are you using BF for your general steelwork,

This standard specifies (fine, medium, coarse) for: