Steel Pipe Low Carbon Burst Pressures Table Chart
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This chart defines the theoretical bursting pressure for carbon steel pipe rated Grade A, seamless tensile strength minimum 48,000 psi and yield strength 30,000 psi min..
Wall Thickness - Decimal Equivalent Pressures given in (pounds / sq. inch) |
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
OD Inches |
22 .028 |
20 .035 |
18 .049 |
16 .065 |
13 .095 |
11 .120 |
10 .134 |
9 .148 |
8 .165 |
7 .180 |
6 .203 |
5 .220 |
1/4 | 13475 | 17325 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
5/16 | 10588 | 13475 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
3/8 | 8800 | 11000 | 16088 | 23375 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
1/2 | 6463 | 8113 | 11688 | 15950 | 24613 | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
5/8 | ----- | 6463 | 9213 | 12513 | 18975 | 25025 | ----- | ----- | ----- | ----- | ----- | ----- |
3/4 | ----- | 5363 | 7563 | 10175 | 15538 | 20213 | 22963 | 25713 | ----- | ----- | ----- | ----- |
7/8 | ----- | 4539 | 6463 | 8663 | 13063 | 16913 | 19250 | 21450 | 24475 | ----- | ----- | ----- |
1 | ----- | 3988 | 5638 | 7563 | 11000 | 14575 | 16500 | 18425 | 20900 | 23100 | ----- | ----- |
1 1/4 | ----- | ----- | ----- | 6050 | 8968 | 11413 | 12925 | 14438 | 16225 | 17875 | 20488 | ----- |
1 1/2 | ----- | ----- | ----- | 4950 | 7288 | 9350 | 10588 | 11825 | 13200 | 14575 | 16775 | 18288 |
1 3/4 | ----- | ----- | ----- | ----- | 6188 | 7975 | 8938 | 10038 | 11275 | 12375 | 14025 | 15400 |
2 | ----- | ----- | ----- | ----- | 5500 | 6875 | 7838 | 8663 | 9763 | 10725 | 12100 | 13200 |
The above table is based on the best known and most widely used formula for calculating the bursting pressure of tubes, namely Barlow's:
P=2St/D
Where:
P = Internal pressure in p.s.i.
S = Fiber stress
of pipe in p.s.i.
t = Wall thickness in inches
D
= Outside diameter in inches