EN 12451: Round copper and copper alloy tubes for heat exchangers
EN 12451: Round copper and copper alloy tubes used in heat exchangers (condensers, evaporators).
Outside diameters from 6 mm up to 76 mm (inclusive) and wall thicknesses from 0.5 mm up to 3 mm (inclusive).
Applications: Condensers, evaporators, desalination equipment and any industrial heat transfer system.
Outside Diameter Tolerances, EN 12451
| Nominal outside diameter | Diameter tolerances, including deviation from circularity | |
|---|---|---|
| over | up to and including | Dimensions in millimetres |
| 6 a) | 14 | 0 |
| -0.12 | ||
| 14 | 26 | 0 |
| -0.20 | ||
| 26 | 76 | 0 |
| -0.30 | ||
| a) Including 6. | ||
Length Tolerances, EN 12451
| Nominal length, mm | Tolerances | |
|---|---|---|
| over | up to and including | |
| - | 2,000 | +2 mm |
| 0 | ||
| 2,000 | 8,000 | +1‰ a |
| 0 | ||
| 8,000 | - | +0.7‰ |
| 0 | ||
| a But not more than 5 mm. | ||