Pipe diameter

Select the standard and dimension to see the details.
Legend:
Dn - Nominal diameter: nominal internal diameter of pipes in millimeters.
DIN - Deutsches Institut für Normung: German standard.
ISO - International Organization for Standardization: Normalized dimension of pipe diameter.
Metric - metric system, outer diameter of the pipe.
All - Pipe diameter value in inches.
Asthm - American Society for Testing and Materials: American standard.