This European standard is intended to simplify drawings. It specifies general tolerances for shape and position for welded structures in four tolerance classes, these being based on customary workshop accuracy. The main criterion for the selection of a particular tolerance class should be the functional requirements which are to be met. If tighter geometrical tolerances are required, or if larger tolerances are both permitted and more economical, then they shall be indicated individually in accordance with ISO 1101.
Registration number (WIID)
3320
Scope
This European standard is intended to simplify drawings. It specifies general tolerances for shape and position for welded structures in four tolerance classes, these being based on customary workshop accuracy. The main criterion for the selection of a particular tolerance class should be the functional requirements which are to be met. If tighter geometrical tolerances are required, or if larger tolerances are both permitted and more economical, then they shall be indicated individually in accordance with ISO 1101.
