Guidance figures for a variety of material diameters are provided in the tables.
(NB: these are not intended to be a substitute for site measurements).
Adaptor couplings allow different diameter pipes to be connected. Bushes are also available in a variety of sizes and thicknesses to allow the standard range of couplings to connect pipes which may have a considerable difference in their outside diameters.
*Also referred to as salt glazed ware or vitrified clay.
Pipe Table for nominal OD's of Pipes from DN100 - DN600