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Pressure

Pressure Rating for standard seamless stainless steel pipe








Pressure Rating for standard stainless steel pipe, temperature from 100°F to 750°F. All ratings in psig based on ANSI/ASME B31.1.The operating (allowable) internal pressure of a vessel, tank, or piping used to hold or transport liquids or gases.The pressure ratings of pipes, valves, etc. must be matched throughout a hydraulic system in order for the system to function.

For example, if a hydraulic system was rated at 2,000 PSI, you should not install a valve rated at 125 PSI. The pressure of the water will quickly cause the valve to fail since its pressure rating is too low.

Pressure Rating (psig)
Pipe Size
(inches)
Pipe Schedule Temperature (°F)
100 200 300 400 500 600 650 700 750
1" 40 3048 2629 2362 2171 2019 1924 1867 1824 1810
1" 80 4213 3634 3265 3002 2791 2659 2580 2528 2501
1" 160 6140 5296 4759 4375 4068 3876 3761 3684 3646
1.5" 40 2257 1947 1750 1608 1496 1425 1383 1354 1340
1.5" 80 3182 2744 2466 2267 2108 2009 1949 1909 1889
1.5" 160 4619 3984 3580 3291 3060 2916 2829 2772 2743
2" 40 1902 1640 1474 1355 1260 1201 1165 1141 1129
2" 80 2747 2369 2129 1957 1820 1734 1682 1648 1631
2" 160 4499 3880 3486 3205 2980 2840 2755 2699 2671
3" 40 1806 1558 1400 1287 1196 1140 1106 1084 1072
3" 80 2553 2202 1979 1819 1691 1612 1564 1532 1516
3" 160 3840 3312 2976 2736 2544 2424 2352 2304 2280
4" 40 1531 1321 1187 1091 1014 967 938 919 909
4" 80 2213 1909 1715 1577 1466 1397 1355 1328 1314
4" 160 3601 3106 2791 2566 2386 2273 2206 2161 2138
5" 40 1342 1158 1040 956 889 847 822 805 797
5" 80 1981 1709 1535 1411 1312 1250 1213 1189 1176
5" 160 3414 2945 2646 2433 2262 2155 2091 2049 2027
6" 40 1219 1052 945 869 808 770 747 732 724
6" 80 1913 1650 1483 1363 1267 1208 1172 1148 1136
6" 160 3289 2836 2549 2343 2179 2076 2014 1973 1953
8" 40 1073 926 832 765 711 678 657 644 637
8" 80 1692 1459 1311 1205 1121 1068 1036 1015 1005
8" 160 3175 2738 2460 2262 2103 2004 1944 1905 1885
10" 40 974 840 755 694 945 615 596 584 578
10" 80 1609 1388 1247 1147 1066 1016 986 966 956
10" 160 3147 2714 2439 2242 2085 1986 1927 1880 1868

The outside housing of most pipes have pressure ratings listed. Pipes made from different materials will have different pressure ratings. The rating of copper tubing is 700 PSI. Schedule 40 steel has a rating of 2,000 PSI. The higher rating of the steel pipe means that the pipe is stronger. Of course, factors other than pressure ratings have to be taken into account when choosing piping. For example, though steel pipe is strong, it is not widely used because it is labor intensive and highly corrosive. In contrast, copper pipe is toxic to living organisms and has been known to keep the water flowing through it fresh for over two thousand years.


ASTM A312 Stainless Steel Pipe Theoretical Bursting and Collapsing Pressures for Pipe

Nominal
Size
Inches
Schedule
Number
Outside
Diameter
Inches
Wall
Thickness
Inches
Inside
Diameter
Inches
Internal
Pressure
PSI
Bursting
External
Pressure
PSI
Collapsing
1/8 10 0.405 0.049 0.307 18,150 7,468
40 0.405 0.068 0.269 25,195 10,761
80 0.405 0.095 0.215 35,185 15,441
1/4 10 0.540 0.065 0.410 18,055 7,425
40 0.540 0.088 0.364 24,444 10,415
80 0.540 0.119 0.302 33,055 14,445
3/8 10 0.678 0.065 0.545 14,380 5,705
40 0.678 0.091 0.493 20,132 8,397
80 0.678 0.126 0.423 27,876 12,021
1/2  5 0.840 0.065 0.710 11,607 4,407
10 0.840 0.083 0.674 14,821 5,911
40 0.840 0.109 0.622 19,464 8,084
80 0.840 0.147 0.546 26,250 11,260
3/4  5 1.050 0.065 0.920 9,285 3,295
10 1.050 0.083 0.884 11,857 4,524
40 1.050 0.113 0.824 16,142 6,529
80 1.050 0.154 0.742 22,000 9,271
1  5 1.315 0.065 1.185 7,414 2,445
10 1.315 0.109 1.097 12,433 3,795
40 1.315 0.133 1.049 15,171 6,075
80 1.315 0.179 0.957 20,418 8,530
1-1/4  5 1.660 0.065 1.530 5,873 1,725
10 1.660 0.109 1.442 9,849 3,585
40 1.660 0.140 1.380 12,650 3,895
80 1.660 0.191 1.278 17,259 7,052
1-1/2  5 1.900 0.065 1.770 5,131 1,376
10 1.900 0.109 1.682 8,605 3,002
40 1.900 0.145 1.610 11,447 4,332
80 1.900 0.200 1.500 15,789 6,364
2  5 2.375 0.065 2.245 4,105 896
10 2.375 0.109 2.157 6,884 2,196
40 2.375 0.154 2.067 9,726 3,526
80 2.375 0.218 1.939 13,768 5,418
2-1/2  5 2.875 0.083 2.709 4,330 1,001
10 2.875 0.120 2.635 6,260 1,905
40 2.875 0.203 2.469 10,591 3,931
3  5 3.500 0.083 3.334 3,557 639
10 3.500 0.120 3.260 5,142 1,375
40 3.500 0.216 3.068 9,257 3,307
3-1/2  5 4.000 0.083 3.834 3,112 431
10 4.000 0.120 3.760 4,500 1,081
4  5 4.500 0.083 4.334 2,766 315
10 4.500 0.120 4.260 4,000 845
40 4.500 0.237 5.345 7,900 2,672
5  5 5.563 0.109 5.295 2,949 350
10 5.563 0.134 6.407 3,613 665
6  5 6.625 0.109 6.357 2,467 129
10 6.625 0.134 3,033 394
NOTE: To compute safe working pressures, above burst pressures should be divided by your desired safety factor.


   Stainless Steel Tubing, Nickel Alloy Tubing, Brass Alloy Tubing, Copper Nickel Pipe Material Grades



Releated Reference
Under Pressure Pressure Rating
Pressure Rating ANSI Class vs Nominal Pressure PN
Pipe Working Pressure Calculation Calculator
Conversion Calculator Calculation-Pressure|Weight|Temperature|Volume|Length
Pipe Plate Bar Square Pipes Weight Calculation Tool
Metals Weight Calculator
Pressure Ratings for standard seamless stainless steel pipes
Bursting Internal Pressure Collapsing External Pressure values of ASTM A312
Internal Pressure Calculation
Flow Capacity, ANSI Schedule 40 Pipe
Steel Pipe (Low Carbon) Burst Pressures
Brinell and Rockwell Hardness Conversion Chart
Maximum Working Pressure-ASTM A53 B Carbon Steel Pipes
Pressure and Temperature Ratings of ASTM A106 Grade B Carbon Steel Pipes
Stainless Steel Tube Dimension
Stainless Steel Tube Guage
ANSI Standard Pipe Chart
Millimeters Inches Conversion Chart
Conversion Table of Temperatue, Length,Mass,Pressure
NPS-Nominal-Pipe-Size
NPS-Nominal-Pipe-Size and DN - Diametre Nominal
Pipe Schedule

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EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tube