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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.

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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
Pipe Dimension (inches)	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 62^oF (16.7^oC) = 703.1 mm H₂O at 62^oF (16.7^oC) = 2.0416 in mercury at 62^oF (16.7^oC) = 51.8 mm mercury at 62^oF (16.7^oC) = 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
Pipe Dimension (inches)	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
Pipe Dimension (inches)	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

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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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