Imperial Copper Pipe

We don't stock imperial copper pipe (after 1972 the UK changed to metric), though we do have some information on its sizes.

British imperial copper pipe was described by the size in inches of its nominal bore, so the outside diameter is larger than the name of the size.

Other coutries (Republic of Ireland and America) are usually not the same as the UK sizes, due to different wall thickness.

Imperial Copper Pipe Sizes
Nominal Bore SizeOutside Diameter
1/2 Inch0.596"
3/4 Inch0.846"
1 Inch1.112"
1-1/4 Inch1.362"
1-1/2 Inch1.612"
2 Inch2.218"