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# Wrought Steel Pipes - Bursting Pressures vs. Size

## Theoretical bursting and working pressure of wrought steel standard, extra strong and double extra strong pipes.

The bursting pressures are based on Barlow's formula. The working pressures are based on factor 8.

Dimensions according ASME/ANSI B36.10/19.

### Standard Wrought Steel Pipes - STD - Schedule 40

Pipe Dimension
(inches)
Standard - STD - Sch. 40
Bursting Pressure
(psi)

Working Pressure
(psi)

1/2 10380 1300
3/4 8610 1080
1 8090 1010
1 1/4 6745 840
1 1/2 6100 760
2 5185 650
2 1/2 5650 710
3 4940 620
3 1/2 5610 700
4 5270 660
5 4630 580
6 4220 530
7 3940 490
8 3720 470
9 3540 445
10 3380 420
12 2930 370
• 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC) = 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 0.06895 atm = 2.307 Ft. H2O

### Extra Strong Wrought Steel Pipes - XS - Schedule 80

Pipe Dimension
(inches)
Extra Strong - XS - Schedule 80
Bursting Pressure
(psi)

Working Pressure
(psi)

1/2 14000 1750
3/4 11730 1470
1 10890 1360
1 1/4 9200 1150
1 1/2 8420 1050
2 7340 920
2 1/2 7680 955
3 6860 860
3 1/2 7950 990
4 7480 940
5 6740 840
6 6510 810
7 6540 820
8 5770 720
9 5185 650
10 4645 580
12 3910 490

### Double Extra Strong Wrought Steel Pipes - XXS

Pipe Dimension
(inches)
Double Extra Strong - XXS
Bursting Pressure
(psi)

Working Pressure
(psi)

1/2 28000 3500
3/4 23460 2930
1 21780 2720
1 1/4 18400 2300
1 1/2 16840 2110
2 14680 1840
2 1/2 15355 1920
3 13710 1710
3 1/2 15900 1990
4 14965 1870
5 13475 1690
6 13035 1630
7 11465 1430
8 10140 1270

## Related Topics

• Pressure Ratings - Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more.

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Temperature

oC
oF

Length

m
km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

kgf
N
lbf

Velocity

m/s
km/h
ft/min
ft/s
mph
knots

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O

Flow

m3/s
m3/h
US gpm
cfm

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