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Nominal Size Dn

[/vc_column_text][vc_column_text]Alphanumerical designation of size for components of a pipework system, which is used for reference purposes and which comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the bore or outside diameter of the end connections[/vc_column_text][/vc_column][/vc_row]