Dimensional Tolerances for Profiles Steel Plate

All tolerances given above are inclusive e.g. 4mm may be taken to mean +/-2mm but by arrangement may be defined as +4/-0 or +0/-4 or any given within the stated range.
Flatness deviation over a measured length

If the plate measures less than 1000mm in length the flatness is taken as 1% of the maximum length.
e.g. A 500mm long plate will have a flatness tolerance of 5mm