Steel-finned tubes
Technical data of the steel-finned tubes
On diameter 25 mm of carbon steel tubes will be bead the beaded fins.
The fins are slackly beaded on the base tube than in the direction of axial will be compressed.
After this the inner side of tube will be expanded with hydraulically pressure (cold extrusion).
This operation made metal-through connection between tube and fins.
| The steel-finned tubes will be made of: |
| - |
Carbon steel tubes and fins with or without hot galvanized |
| - |
Stainless steel tubes and fins |
| Data: |
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Outer diameter of fins: |
45 mm |
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Distance of fins: |
4 mm |
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Surface of heat transfer: |
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Fin: |
0,628 m2 |
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|
Tube: |
0,0785 m2 |
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Weight: |
2.8 kg/fm |
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Tubes dividing: |
48 mm (proposed) |
The steel-finned tubes is made max. 6 m
| The steel-finned tubes useable with advantage: |
| - |
Economizers |
| - |
Radiators/calorifers with high temperature |
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