Guideline B-02
In the absence of DN in the standards, it shall be assumed that DN corresponds to the internal diameter in millimetres for circular products or the diameter in millimetres of the equivalent flow section for non-circular products. In case of pressure accessories this assumption is made regardless of the diameter of the connection (which is […]
Guideline B-28
For such a piping the maximum DN used for that item of pressure equipment shall be the basis for the classification. The manufacturer shall show the extent of piping for that item in the technical documentation. Note:The term a “piping” as used above means an item of pressure equipment, and not an “assembly” as defined […]