Copper Water Tubing: What It Is, And When, Where, and How It is Used
Copper water tubing is used in the HVAC industry, for water plumbing, certain gasses such as liquified petrolem, compressed air, and others. Specifications for copper water tubing are provided by the ASTM (American Society for Testing and Materials), which provides the report ASTM B 88 | Standard Specification for Seamless Copper Water Tube.
| NomSize | Nominal Dimensions (in inches) | ||||||||
| Type K | Type L | Type M | |||||||
| O.D. | I.D. | Wall | O.D. | I.D. | Wall | O.D. | I.D. | Wall | |
| 1/4 | 0.375 | 0.305 | 0.035 | 0.375 | 0.315 | 0.03 | |||
| 3/8 | 0.5 | 0.402 | 0.049 | 0.5 | 0.43 | 0.035 | 0.5 | 0.45 | 0.025 |
| 1/2 | 0.625 | 0.527 | 0.049 | 0.625 | 0.545 | 0.04 | 0.625 | 0.569 | 0.028 |
| 5/8 | 0.75 | 0.652 | 0.049 | 0.75 | 0.666 | 0.042 | |||
| 3/4 | 0.875 | 0.745 | 0.065 | 0.875 | 0.785 | 0.045 | 0.875 | 0.811 | 0.032 |
| 1 | 1.125 | 0.995 | 0.065 | 1.125 | 1.025 | 0.05 | 1.125 | 1.055 | 0.035 |
| 1-1/4 | 1.375 | 1.245 | 0.065 | 1.375 | 1.265 | 0.055 | 1.375 | 1.291 | 0.042 |
| 1-1/2 | 1.625 | 1.481 | 0.072 | 1.625 | 1.505 | 0.06 | 1.625 | 1.527 | 0.049 |
| 2 | 2.125 | 1.959 | 0.083 | 2.125 | 1.985 | 0.07 | 2.125 | 2.009 | 0.058 |
| 2-1/2 | 2.625 | 2.435 | 0.095 | 2.625 | 2.465 | 0.08 | 2.625 | 2.495 | 0.065 |
| 3 | 3.125 | 2.907 | 0.109 | 3.125 | 2.945 | 0.09 | 3.125 | 2.981 | 0.072 |
| 3-1/2 | 3.625 | 3.385 | 0.12 | 3.625 | 3.425 | 0.1 | 3.625 | 3.459 | 0.083 |
| 4 | 4.125 | 3.857 | 0.134 | 4.125 | 3.905 | 0.11 | 4.125 | 3.935 | 0.095 |
| 5 | 5.125 | 4.805 | 0.16 | 5.125 | 4.875 | 0.125 | 5.125 | 4.907 | 0.109 |
| 6 | 6.125 | 5.741 | 0.192 | 6.125 | 5.845 | 0.14 | 6.125 | 5.881 | 0.122 |
| 8 | 8.125 | 7.583 | 0.271 | 8.125 | 7.725 | 0.2 | 8.125 | 7.785 | 0.17 |
| 10 | 10.125 | 9.449 | 0.338 | 10.125 | 9.625 | 0.25 | 10.125 | 9.701 | 0.212 |
| 12 | 12.125 | 11.315 | 0.405 | 12.125 | 11.565 | 0.28 | 12.125 | 11.617 | 0.254 |
Note: always check your local codes!
Post time: Mar-22-2023