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Imperial Copper Pipe. We do not carry imperial copper pipe; the UK transitioned to metric measurements in 1972. However, we can provide some details on its sizes.
The traditional British imperial pipe sizes were based on the nominal bore in inches, meaning the outside diameter was larger than the nominal size indicated.
Copper pipes from other countries, such as the Republic of Ireland and the United States, typically differ from UK sizes due to variations in wall thickness.
On-Demand Supplies offers a wide range of Imperial products. If you need assistance with sizing or selecting the right product, please call us at 01452 238 287 and speak with our knowledgeable team.
UK Imperial Copper Pipe Size Chart
| Nominal Bore Size | Outside Diameter |
|---|---|
| 1/2 Inch | 0.596″ / 15.14 mm |
| 3/4 Inch | 0.846″ / 21.49 mm |
| 1 Inch | 1.112″ / 28.24 mm |
| 1 – 1/4 Inch | 1.362″ / 34.59 mm |
| 1 – 1/2 Inch | 1.612″ / 40.94 mm |
| 2 Inch | 2.218″ / 56.34 mm |
Imperial Copper Pipe. This information is intended for general guidance. The data provided here are our interpretations of the relevant standards. For more precise and detailed information, please refer to the appropriate standards directly.
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