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Copper pipe (ASTM B88 Type L and M), 1/4 to 2 inch
What is the outside diameter of 1/2 inch and 3/4 inch copper pipe? · Hardware · basis: ASTM B88: OD = nominal + 1/8 in for all types; Type L and Type M wall thicknesses
Long Earth Society build part. Hot and cold heat-exchanger walls on the LES Stirling heads. The engines · all LES parts
- sizes
- 8 in table
Notes
- OD is nominal + 1/8 in: 1/2 in pipe is 15.88 mm (0.625 in), 3/4 in is 22.22 mm, 1 in is 28.58 mm. Fittings grip the OD; a printed adapter that slips over the pipe uses OD + 0.3 mm.
- Type L (blue) wall: 1/2 1.02, 3/4 1.14, 1 1.27 mm. Type M (red) is thinner: 0.71, 0.81, 0.89 mm. Type K (green) is thicker still and rarer.
- Why it's here: copper's conductivity makes 3/4 and 1 in Type L tube the hot and cold heat-exchanger walls on the LES Stirling heads; 1/4 and 3/8 are regenerator and transfer tubes.
Sizes
| nominal_in | od_mm | type_l_wall_mm | type_l_id_mm | type_m_wall_mm | type_m_id_mm |
|---|---|---|---|---|---|
| 1/4 | 9.53 | 0.76 | 8.01 | 0.64 | 8.25 |
| 3/8 | 12.7 | 0.89 | 10.92 | 0.64 | 11.42 |
| 1/2 | 15.88 | 1.02 | 13.84 | 0.71 | 14.46 |
| 3/4 | 22.22 | 1.14 | 19.94 | 0.81 | 20.6 |
| 1 | 28.58 | 1.27 | 26.04 | 0.89 | 26.8 |
| 1-1/4 | 34.93 | 1.65 | 31.63 | 1.07 | 32.79 |
| 1-1/2 | 41.28 | 1.52 | 38.24 | 1.24 | 38.8 |
| 2 | 53.98 | 1.78 | 50.42 | 1.47 | 51.04 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Copper tubing | web | CC BY-SA 4.0 (text) |
| Copper Development Association | Copper Tube Handbook (dimensions table) | CDA publication verify | |
| Long Earth Society | Engine builds that use these parts (videos and write-ups) | web, video | LES site |
Free files
★ Free files 8 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| copper-1-4in-typeL-50mm | 1/4 in nominal, OD 9.53 mm, Type L wall 0.76 mm, 50 mm stub | STEP · STL |
| copper-3-8in-typeL-50mm | 3/8 in nominal, OD 12.7 mm, Type L wall 0.89 mm, 50 mm stub | STEP · STL |
| copper-1-2in-typeL-50mm | 1/2 in nominal, OD 15.88 mm, Type L wall 1.02 mm, 50 mm stub | STEP · STL |
| copper-3-4in-typeL-50mm | 3/4 in nominal, OD 22.22 mm, Type L wall 1.14 mm, 50 mm stub | STEP · STL |
| copper-1in-typeL-50mm | 1 in nominal, OD 28.58 mm, Type L wall 1.27 mm, 50 mm stub | STEP · STL |
| copper-1-1-4in-typeL-50mm | 1-1/4 in nominal, OD 34.93 mm, Type L wall 1.65 mm, 50 mm stub | STEP · STL |
| copper-1-1-2in-typeL-50mm | 1-1/2 in nominal, OD 41.28 mm, Type L wall 1.52 mm, 50 mm stub | STEP · STL |
| copper-2in-typeL-50mm | 2 in nominal, OD 53.98 mm, Type L wall 1.78 mm, 50 mm stub | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=copper-pipe-type-l-m
Fits with
Questions
What is the OD of 3/4 inch copper pipe?
22.22 mm (0.875 in). 1/2 in is 15.88 mm, 1 in is 28.58 mm: always nominal + 1/8 in.
What is the difference between Type L and Type M copper?
Wall thickness only: 1/2 in Type L is 1.02 mm, Type M 0.71 mm; same OD, same fittings.
What size hole for 1/2 inch copper pipe to pass through?
16.2 mm (OD 15.88 + 0.3) for a slip fit; 16.5 mm if the pipe is painted or the print is rough.