Steel Pipe Low Carbon Burst Pressures Table Chart

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