Tolerances

Tolerances of dished and flanged ends

Unless otherwise agreed, the following tolerances are observed in manufacturing:

Outside diameter D mm < 600 > 600
Largest permissible deviation in circumference, x D ± 3 mm ± 0,25%
Greatest permissible circularity
D max - D min		 (D+1200)/200
not exceeding 1% x D
Greatest permissible deviation from nominal height -0
+0.8 % x D
Minimum of + 10 mm


Tolerances of edge bevels

Unless otherwise agreed, the following dimensions and tolerances will be used:

  • angle of bevel 30° ± 2°
  • taper 1:4 (15°) + 0°/-3°
  • root face 2-3 mm ± 1 mm
  • thickness deviation permitted in taper varies according to the final thickness as follows:
e < 5 mm -0/+ 1 mm
5 < e < 10 mm -0/+ 1,5 mm
10 < e < 25 mm -0/+ 2 mm
e > 25 mm -0/+ 3 mm