The table “Data relating to iron pipe” will be found especially useful to the engineer and steam fitter. The size of pipes referred to in the table range from 1⁄8 to 10 inches in diameter. In the successive columns are given the figures for the following important information:
1. Inside diameter of each size.
2. Outside diameter of each size.
3. External circumference of each size.
4. Length of pipe per square foot of outside surface.
5. Internal area of each size.
6. External area of each size.
7. Length of pipe containing one cubic foot.
8. Weight per foot of length of pipes.
9. Number of threads per inch of screw.
10. Contents in gallons (U. S. measure) per foot.
11. Weight of water per foot of length.
DATA
Relating to Iron Pipe.
| Inside Diameter. | Outside Diameter. | External Circumference. | Length of Pipe per sq. ft. of Outside Surface. | Internal Area. | External Area. |
|---|---|---|---|---|---|
| Inches. | Inches. | Inches. | Feet. | Inches. | Inches. |
| 1⁄8 | .40 | 1.272 | 9.44 | .012 | .129 |
| 1⁄4 | .54 | 1.696 | 7.075 | .049 | .229 |
| 3⁄8 | .67 | 2.121 | 5.657 | .110 | .358 |
| 1⁄2 | .84 | 2.652 | 4.502 | .196 | .554 |
| 3⁄4 | 1.05 | 3.299 | 3.637 | .441 | .866 |
| 1 | 1.31 | 4.134 | 2.903 | .785 | 1.357 |
| 11⁄4 | 1.66 | 5.215 | 2.301 | 1.227 | 2.164 |
| 11⁄2 | 1.9 | 5.969 | 2.01 | 1.767 | 2.835 |
| 2 | 2.37 | 7.461 | 1.611 | 3.141 | 4.430 |
| 21⁄2 | 2.87 | 9.032 | 1.328 | 4.908 | 6.491 |
| 3 | 3.5 | 10.996 | 1.091 | 7.068 | 9.621 |
| 31⁄2 | 4. | 12.566 | .955 | 9.621 | 12.566 |
| 4 | 4.5 | 14.137 | .849 | 12.566 | 15.904 |
| 41⁄2 | 5. | 15.708 | .765 | 15.904 | 19.635 |
| 5 | 5.56 | 17.475 | .629 | 19.635 | 24.299 |
| 6 | 6.62 | 20.813 | .577 | 28.274 | 34.471 |
| 7 | 7.62 | 23.954 | .505 | 38.484 | 45.663 |
| 8 | 8.62 | 27.096 | .444 | 50.265 | 58.426 |
| 9 | 9.68 | 30.443 | .394 | 63.617 | 73.715 |
| 10 | 10.75 | 33.000 | .355 | 78.540 | 90.792 |
| Inside Diameter. | Length of Pipe containing one Cubic Foot. | Weight per ft. of Length. | No. of Threads per inch of Screw. | Contents in Gallons[A] per foot. | Weight of Water per foot of Length. |
| Inches. | Feet. | Lbs. | Lbs. | ||
| 1⁄8 | 2500. | .24 | 27 | .0006 | .005 |
| 1⁄4 | 1385. | .42 | 18 | .0026 | .021 |
| 3⁄8 | 751.5 | .56 | 18 | .0057 | .047 |
| 1⁄2 | 472.4 | .84 | 14 | .0102 | .085 |
| 3⁄4 | 270. | 1.12 | 14 | .0230 | .190 |
| 1 | 166.9 | 1.67 | 111⁄2 | .0408 | .349 |
| 11⁄4 | 96.25 | 2.25 | 111⁄2 | .0638 | .527 |
| 11⁄2 | 70.65 | 2.69 | 111⁄2 | .0918 | .760 |
| 2 | 42.36 | 3.66 | 111⁄2 | .1632 | 1.356 |
| 21⁄2 | 30.11 | 5.77 | 8 | .2550 | 2.116 |
| 3 | 19.49 | 7.54 | 8 | .3673 | 3.049 |
| 31⁄2 | 14.56 | 9.05 | 8 | .4998 | 4.155 |
| 4 | 11.31 | 10.72 | 8 | .6528 | 5.405 |
| 41⁄2 | 9.03 | 12.49 | 8 | .8263 | 6.851 |
| 5 | 7.20 | 14.56 | 8 | 1.020 | 8.500 |
| 6 | 4.98 | 18.76 | 8 | 1.469 | 12.312 |
| 7 | 3.72 | 23.41 | 8 | 1.999 | 16.662 |
| 8 | 2.88 | 28.34 | 8 | 2.611 | 21.750 |
| 9 | 2.26 | 34.67 | 8 | 3.300 | 27.500 |
| 10 | 1.80 | 40.64 | 8 | 4.081 | 34.000 |
[A] The Standard U. S. gallon of 231 cubic inches. | |||||
The division of process in the manufacture of pipe, takes place at 11⁄4 inch, 11⁄4 inch and smaller sizes being called butt-welded pipe, and 11⁄2 inch and larger sizes being known as lap-welded pipe; this rule holds good for standard, X-strong and XX-strong.
JOINTS OF PIPES AND FITTINGS.
The accompanying illustrations represent certain joints, couplings and connections used in steam and hot water heating systems.