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NO | tube diameter(mm) | fin die(mm) | fin surface | FIP(mm) |
1 | 7 | 21*12.7 | plain / louver / wave | 1.2-2.5 |
2 | 7 | 21*18.19 | plain / louver / wave | 1.2-2.5 |
3 | 9.52 | 25*21.65 | plain / louver / wave | 1.4-4.0 |
4 | 12.7 | 31.75*27.5 | plain // wave | 1.4-6.0 |
5 | 12.7 | 38*38 | plain | 3.6-6.4 |
6 | 15.88 | 38.1*32.9 | plain / wave | 1.6-6 |