Description: Language-independent identification of a class that is unique within a classification system; Name: class code
Description: language-independent, unambiguous code of a class within a class system; Name: code of class
Description: PN (nominal pressure) is an alphanumeric variable for reference purposes, relating to a combination of mechanical and measurement properties of a pipe component. It comprises the letters PN followed by a dimensionless number (according to EN 1333/96.08); Name: Nominal pressure of the muffs, A1