---------+----------+---------+------------------+--------------------
| | |BURSTING PRESSURE.|COLLAPSING PRESSURE.
External | |Internal +------------------+--------------------
Diameter.|Thickness.|Diameter.|Per Square Inch of|Per Square Inch of
| | +--------+---------+---------+----------
| | |Internal| Section |External | Section
| | |Surface.|of Metal.|Surface. | of Metal.
---------+----------+---------+--------+---------+---------+----------
Inches. | Inch. | Inches. | Lbs. | Tons. | Lbs. | Tons.
1-1/4 | .083 | 1.084 | 7700 | 22.4 | 6500 | 21.7
1-3/8 | .083 | 1.209 | 6900 | 22.4 | 5800 | 21.3
1-1/2 | .083 | 1.334 | 6200 | 22.4 | 5200 | 21.0
1-3/4 | .083 | 1.584 | 5300 | 22.4 | 4300 | 20.3
2 | .083 | 1.834 | 4500 | 22.4 | 3700 | 19.7
2-1/4 | .095 | 2.060 | 4600 | 22.4 | 3600 | 19.0
2-1/2 | .109 | 2.282 | 4800 | 22.4 | 3600 | 18.3
2-3/4 | .109 | 2.532 | 4400 | 22.4 | 3100 | 17.7
3 | .120 | 2.760 | 4300 | 22.4 | 3000 | 17.0
3-1/2 | .134 | 3.232 | 4200 | 22.4 | 2700 | 15.7
3-3/4 | .134 | 3.482 | 3900 | 22.4 | 2400 | 15.0
4 | .134 | 3.732 | 3600 | 22.4 | 2100 | 14.3
4-1/2 | .134 | 4.232 | 3200 | 22.4 | 1700 | 13.0
4-3/4 | .134 | 4.482 | 3000 | 22.4 | 1600 | 12.3
5 | .134 | 4.732 | 2800 | 22.4 | 1400 | 11.7
5-1/2 | .148 | 5.204 | 2800 | 22.4 | 1200 | 10.3
6 | | 5.704 | 2600 | 22.4 | 1000 | 9.0
---------+----------+---------+--------+---------+---------+----------