Finned Tube Surface Area
AVERAGE OUTSIDE SURFACE AREA
(Sq. Ft. per Lineal Foot of Tube)
Tube O.D. Chart
| O.D. |
FIN |
FIN |
Number of Fins per Inch of Length |
| TUBE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 3/8" |
0.125 |
0.625 |
0.233 |
0.267 |
0.300 |
0.334 |
0.369 |
0.403 |
0.437 |
0.471 |
0.505 |
0.573 |
|
0.250 |
0.875 |
0.433 |
0.517 |
0.600 |
0.684 |
0.768 |
0.853 |
0.937 |
1.021 |
1.105 |
1.273 |
|
0.312 |
1.000 |
0.557 |
0.673 |
0.788 |
0.902 |
1.017 |
1.132 |
1.247 |
1.362 |
1.477 |
|
| O.D. |
FIN |
FIN |
Number of Fins per Inch of Length |
| TUBE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 1/2" |
0.125 |
0.750 |
0.298 |
0.340 |
0.382 |
0.424 |
0.466 |
0.508 |
0.55 |
0.592 |
0.634 |
0.718 |
|
0.250 |
1.000 |
0.531 |
0.632 |
0.731 |
0.834 |
0.935 |
1.036 |
1.137 |
1.238 |
1.339 |
1.514 |
|
0.312 |
1.125 |
0.672 |
0.808 |
0.943 |
1.080 |
1.216 |
1.352 |
1.488 |
1.624 |
1.760 |
2.032 |
|
0.375 |
1.250 |
0.830 |
1.005 |
1.179 |
1.335 |
1.530 |
1.705 |
1.880 |
2.005 |
2.230 |
|
| O.D. |
FIN |
FIN |
Number of Fins per Inch of Length |
| TUBE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 5/8" |
0.250 |
1.125 |
0.630 |
0.746 |
0.862 |
0.978 |
1.094 |
1.210 |
1.326 |
1.442 |
1.558 |
1.790 |
|
0.312 |
1.250 |
0.787 |
0.943 |
1.099 |
1.255 |
1.411 |
1.567 |
1.723 |
1.879 |
2.035 |
2.347 |
|
0.375 |
1.375 |
0.961 |
1.160 |
1.359 |
1.558 |
1.757 |
1.956 |
2.155 |
2.354 |
2.553 |
2.951 |
|
0.438 |
1.500 |
1.151 |
1.398 |
1.645 |
1.892 |
2.139 |
2.386 |
2.633 |
2.880 |
3.127 |
|
| O.D. |
FIN |
FIN |
Number of Fins per Inch of Length |
| TUBE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 3/4" |
0.250 |
1.250 |
0.728 |
0.861 |
0.993 |
1.127 |
1.260 |
1.393 |
1.526 |
1.659 |
1.792 |
2.058 |
|
0.312 |
1.375 |
0.902 |
1.078 |
1.254 |
1.430 |
1.606 |
1.782 |
1.958 |
2.134 |
2.310 |
2.662 |
|
0.375 |
1.500 |
1.092 |
1.316 |
1.539 |
1.764 |
1.988 |
2.212 |
2.436 |
2.660 |
2.884 |
3.332 |
|
0.438 |
1.625 |
1.298 |
1.574 |
1.849 |
2.126 |
2.402 |
2.678 |
2.954 |
3.230 |
3.506 |
4.058 |
|
0.500 |
1.750 |
1.521 |
1.852 |
2.183 |
2.514 |
2.845 |
3.176 |
3.507 |
3.838 |
4.169 |
|
| O.D. |
FIN |
FIN |
Number of Fins per Inch of Length |
| TUBE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 7/8" |
0.250 |
1.375 |
0.826 |
0.975 |
1.124 |
1.273 |
1.422 |
1.571 |
1.720 |
1.869 |
2.018 |
2.316 |
|
0.312 |
1.5 |
1.016 |
1.213 |
1.41 |
1.661 |
1.876 |
2.091 |
2.306 |
2.521 |
2.736 |
3.166 |
|
0.375 |
1.625 |
1.223 |
1.471 |
1.719 |
1.967 |
2.215 |
2.463 |
2.711 |
2.959 |
3.207 |
3.703 |
|
0.438 |
1.75 |
1.445 |
1.75 |
2.054 |
2.36 |
2.665 |
2.970 |
3.275 |
3.580 |
3.885 |
|
|
0.500 |
1.875 |
1.685 |
2.049 |
2.412 |
2.777 |
3.141 |
3.505 |
3.869 |
4.233 |
4.597 |
|
| O.D. |
FIN |
FIN |
Number of Fins per Inch of Length |
| TUBE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 1" |
0.250 |
1.500 |
0.924 |
1.090 |
1.255 |
1.422 |
1.588 |
1.754 |
1.920 |
2.086 |
2.252 |
2.584 |
|
0.312 |
1.625 |
1.131 |
1.348 |
1.565 |
1.782 |
1.999 |
2.216 |
2.433 |
2.650 |
2.867 |
3.301 |
|
0.375 |
1.750 |
1.354 |
1.626 |
1.899 |
2.170 |
2.442 |
2.714 |
2.986 |
3.258 |
3.530 |
4.074 |
|
0.438 |
1.875 |
1.593 |
1.925 |
2.258 |
2.589 |
2.921 |
3.253 |
3.585 |
3.917 |
4.249 |
|
|
0.500 |
2.000 |
1.848 |
2.245 |
2.642 |
3.039 |
3.436 |
3.833 |
4.230 |
4.627 |
5.024 |
|
|
0.625 |
2.250 |
2.409 |
2.945 |
3.482 |
4.017 |
4.553 |
5.089 |
|
|
|
|
Pipe Size Chart
| PIPE |
FIN |
FIN |
Number of Fins per Inch of Length |
| SIZE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 3/4" |
0.250 |
1.550 |
0.968 |
1.141 |
1.315 |
1.490 |
1.663 |
1.863 |
2.009 |
2.182 |
2.355 |
|
| (1.050") |
0.312 |
1.675 |
1.182 |
1.409 |
1.636 |
1.863 |
2.090 |
2.317 |
2.554 |
2.771 |
2.998 |
|
|
0.375 |
1.800 |
1.413 |
1.697 |
1.981 |
2.265 |
2.549 |
2.833 |
3.117 |
3.401 |
3.685 |
|
|
0.438 |
1.925 |
1.660 |
2.006 |
2.352 |
2.698 |
3.044 |
3.390 |
3.736 |
4.082 |
4.428 |
|
|
0.500 |
2.050 |
1.923 |
2.335 |
2.747 |
3.159 |
3.571 |
3.983 |
4.395 |
|
|
|
|
0.625 |
2.300 |
2.498 |
3.055 |
3.610 |
4.166 |
4.723 |
5.280 |
|
|
|
|
| PIPE |
FIN |
FIN |
Number of Fins per Inch of Length |
| SIZE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 1" |
0.375 |
2.065 |
1.690 |
2.027 |
2.363 |
2.701 |
3.038 |
3.375 |
3.712 |
4.049 |
4.386 |
|
| (1.315") |
0.438 |
2.190 |
1.972 |
2.379 |
2.786 |
3.193 |
3.600 |
4.007 |
4.414 |
4.821 |
5.228 |
|
|
0.500 |
2.315 |
2.270 |
2.752 |
3.232 |
3.716 |
4.198 |
4.680 |
5.162 |
5.644 |
6.126 |
|
|
0.625 |
2.565 |
2.915 |
3.558 |
4.200 |
4.841 |
5.487 |
6.130 |
|
|
|
|
|
0.750 |
2.815 |
3.626 |
4.446 |
5.266 |
6.086 |
6.906 |
7.726 |
|
|
|
|
| PIPE |
FIN |
FIN |
Number of Fins per Inch of Length |
| SIZE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 1-1/4" |
0.500 |
2.660 |
2.722 |
3.293 |
3.865 |
4.435 |
5.006 |
5.577 |
6.148 |
6.719 |
7.290 |
|
| (1.660") |
0.625 |
2.910 |
3.457 |
4.213 |
4.968 |
5.722 |
6.477 |
7.232 |
|
|
|
|
|
0.750 |
3.160 |
4.258 |
5.214 |
6.170 |
7.126 |
8.082 |
9.038 |
|
|
|
|
| PIPE |
FIN |
FIN |
Number of Fins per Inch of Length |
| SIZE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 1-1/2" |
0.500 |
2.900 |
3.036 |
3.670 |
4.305 |
4.941 |
5.576 |
6.211 |
6.846 |
7.481 |
8.116 |
|
| (1.900") |
0.625 |
3.150 |
3.834 |
4.668 |
5.502 |
6.336 |
7.170 |
8.004 |
|
|
|
|
|
0.750 |
3.400 |
4.698 |
5.748 |
6.798 |
7.848 |
8.898 |
9.948 |
|
|
|
|
|
0.875 |
3.650 |
5.627 |
6.909 |
8.192 |
9.473 |
10.755 |
12.037 |
|
|
|
|
| PIPE |
FIN |
FIN |
Number of Fins per Inch of Length |
| SIZE |
HEIGHT |
O.D. |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
14 |
| 2" |
0.500 |
3.375 |
3.658 |
4.417 |
5.176 |
5.935 |
6.698 |
7.453 |
8.212 |
8.971 |
9.730 |
|
| (2.375") |
0.625 |
3.625 |
4.580 |
5.570 |
6.559 |
7.550 |
8.540 |
9.530 |
|
|
|
|
|
0.750 |
3.875 |
5.568 |
6.805 |
8.041 |
9.279 |
10.516 |
11.753 |
|
|
|
|
|
0.875 |
4.125 |
6.621 |
8.122 |
9.622 |
11.124 |
12.625 |
14.126 |
|
|
|
|
|
1.000 |
4.375 |
7.741 |
9.520 |
11.300 |
13.081 |
14.861 |
|
|
|
|
|