- The standard dimensional ratio SDR corresponds to the quotient between the outside diameter and the wall thickness of the pipe. It is non-dimensional.
- The nominal pressure PN corresponds to the maximum permissible operating pressure of the pipe at 20°C, in bar.
- e = Minimum Wall Thickness.
- Pipe series related to Pipe Stiffness.

This table is based on the standards ISO 4427 and ISO 4065.
The weights are calculated on the base of average diameter and thickness values, according to tolerances specified in the standards ISO 11922-1.
- Figures in black indicate SABS mark bearing pipes.
- Figures in red indicate pipes classified under ISO 4065 (non-SABS mark bearing pipes).


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