Tolerances

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Dimensional Tolerances

 
Property Tolerance
Profile height and width of flange

Nominal dimensions (mm)

  • B and H: ±  0,5 %
    with minimum ± 0,20 mm
  • B and H: ±  0,5 %
    with maximum ± 0,75 mm
Diametre of Rods and Tubes

D, d (mm)

0 – 10
10 – 20
20 – 50
50 – 100
100 –

D

± 0,20
± 0,30
± 0,35
± 0,40
± 0,45

d

± 0,20
± 0,30
± 0,35
± 0,40
± 0,45
Wall-thickness of open
and closed profiles		 Nominal dimensions (mm)

Thickness

0 – 2
2 – 5
5 – 10
10 –

T1

± 0,15
± 0,20
± 0,35
± 0,45

T2

± 0,30
± 0,35
± 0,45
± 0,50
Flatness in transverse direction
Tolerance
F < 0,008 X B mm
Size of angle
Tolerance
Y ± 1,5°
Straightness

Tolerance (B and H are overall
breadth and height dimensions)

  • D < 0,002 x L2 for sections
    with B or H < 50 mm

  • D < 0,001 x L2 for sections with B or H ≥ 50 mm and
    < 100 mm

  • D < 0,0005 x L2 for sections
    with B or H ≥ 100 mm
Twist
Tolerance

  • V < 1,5° per metre maximum
    for thickness < 5 mm
  • V < 1,0° per metre maximum
    for thickness ≥ 5 mm
Length of cut
L + 20 / – 0 mm
Angularity of cut
V ± 1,5°

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