This standard establishes rules for determination of the necessary size, d, of 90° centre holes of type S in workpieces with weight from 7.100 kg to 180.000 kg.
DS 2390:1994 history
1994DS 2390:1994 Centre holes 90 ° - Determination of dimensions
1993DS 2390:1993 Centre holes 90 degree. Determination fo dimensions