PP-R is listed from 20 mm to 63 mm, HDPE from 20 mm to 90 mm, PVC waste from 1¼ inches to 8 inches, conduit in 20 mm, 25 mm, 32 mm and 50 mm, and pressure pipes in ½ inch, ¾ inch and 1 inch. Nominal size alone does not define wall thickness, pressure rating or material grade; those details are confirmed separately.
Understanding Nominal Pipe Sizes in the LIRLEE Range
A practical overview of the listed metric and imperial sizes across the current product families.