|_____________________| Square |_________________|
| | | |Foot of | | |
| Nominal | Standard | Extra |External|Standard| Extra |
| Size | | Strong |Surface | | Strong |
|_________|__________|__________|________|________|________|
| | | | | | |
| 1/8 | .0573 | .0363 | 9.440 | .244 | .314 |
| 1/4 | .1041 | .0716 | 7.075 | .424 | .535 |
| 3/8 | .1917 | .1405 | 5.657 | .567 | .738 |
| 1/2 | .3048 | .2341 | 4.547 | .850 | 1.087 |
| 3/4 | .5333 | .4324 | 3.637 | 1.130 | 1.473 |
| 1 | .8626 | .7193 | 2.904 | 1.678 | 2.171 |
| 1-1/4 | 1.496 | 1.287 | 2.301 | 2.272 | 2.996 |
| 1-1/2 | 2.038 | 1.767 | 2.010 | 2.717 | 3.631 |
| 2 | 3.356 | 2.953 | 1.608 | 3.652 | 5.022 |
| 2-1/2 | 4.784 | 4.238 | 1.328 | 5.793 | 7.661 |
| 3 | 7.388 | 6.605 | 1.091 | 7.575 | 10.252 |
| 3-1/2 | 9.887 | 8.888 | .955 | 9.109 | 12.505 |
| 4 | 12.730 | 11.497 | .849 | 10.790 | 14.983 |
| 4-1/2 | 15.961 | 14.454 | .764 | 12.538 | 17.611 |
| 5 | 19.990 | 18.194 | .687 | 14.617 | 20.778 |
| 6 | 28.888 | 26.067 | .577 | 18.974 | 28.573 |
| 7 | 38.738 | 34.472 | .501 | 23.544 | 38.048 |
| 8 | 50.040 | 45.664 | .443 | 28.544 | 43.388 |
| 9 | 62.776 | 58.426 | .397 | 33.907 | 48.728 |
| 10 | 78.839 | 74.662 | .355 | 40.483 | 54.735 |
| 11 | 95.033 | 90.763 | .325 | 45.557 | 60.075 |
| 12 | 113.098 | 108.43 | .299 | 49.562 | 65.415 |
|_________|__________|__________|________|________|________|

Dimensions are nominal and except where noted are in inches.

In connection with pipe sizes, Table 63, giving certain tube data may be
found to be of service.

TABLE 63

TUBE DATA, STANDARD OPEN HEARTH OR LAP WELDED STEEL TUBES

+-----+--+----+-----+------+------+------+------+-------+-------+-------+
|S E D|B | T | I D |Circumference| Transverse |Square |Length |Nominal|
|i x i|. | h | n i | | Area | Feet |in Feet|Weight |
|z t a|W | i | t a | |Square Inches| of | per |Pounds |
|e e m|. | c | e m +------+------+------+------+ Exter |Square | per |
| r e| | k | r e |Exter-|Inter-|Exter-|Inter-| -nal