Calculate the Standard Dimension Ratio (SDR) and theoretical Pressure Nominal (PN) rating for uPVC.

Outside Diameter

Wall Thickness

Standard uPVC Classes:PN6PN10PN16PN20PN25

SDR represents the ratio of pipe diameter to wall thickness. A lower SDR means a thicker wall and higher pressure capability.

Tool brief

Convert outside diameter and wall thickness into SDR and an estimated pressure class for PVC systems.

What you enterOD and wall thickness

What you getSDR and PN

Related standards

SDR Rating PVC