Pipe Sizes & Pressure Ratings
Ratings are given for standard seamless pipe sizes at temperatures from 100° F to 750° F. All ratings are in psig and are based on ANSI/ASME B 3 1. 1.
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| Pipe Size | Pipe Schedule | 100°F | 200°F | 300°F | 400°F | 500°F | 600°F | 650°F | 700°F | 750°F |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Pipe Size | Pipe Schedule | 100°F | 200°F | 300°F | 400°F | 500°F | 600°F | 650°F | 700°F | 750°F |
|---|---|---|---|---|---|---|---|---|---|---|
| 1" | 40 | 2857 | 2857 | 2857 | 2857 | 2857 | 2857 | 2857 | 2743 | 2476 |
| 1" | 80 | 3950 | 3950 | 3950 | 3950 | 3950 | 3950 | 3950 | 3792 | 3423 |
| 1" | 160 | 5757 | 5757 | 5757 | 5757 | 5757 | 5757 | 5757 | 5526 | 4989 |
| 1.5" | 40 | 2116 | 2116 | 2116 | 2116 | 2116 | 2116 | 2116 | 2032 | 1834 |
| 1.5" | 80 | 2983 | 2983 | 2983 | 2983 | 2983 | 2983 | 2983 | 2864 | 2585 |
| 1.5" | 160 | 4331 | 4331 | 4331 | 4331 | 4331 | 4331 | 4331 | 4157 | 3753 |
| 2" | 40 | 1783 | 1783 | 1783 | 1783 | 1783 | 1783 | 1783 | 1712 | 1545 |
| 2" | 80 | 2575 | 2575 | 2575 | 2575 | 2575 | 2575 | 2575 | 2472 | 2232 |
| 2" | 160 | 4217 | 4217 | 4217 | 4217 | 4217 | 4217 | 4217 | 4049 | 3655 |
| 3" | 40 | 1693 | 1693 | 1693 | 1693 | 1693 | 1693 | 1693 | 1625 | 1467 |
| 3" | 80 | 2394 | 2394 | 2394 | 2394 | 2394 | 2394 | 2394 | 2298 | 2074 |
| 3" | 160 | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | 3456 | 3120 |
| 4" | 40 | 1435 | 1435 | 1435 | 1435 | 1435 | 1435 | 1435 | 1378 | 1244 |
| 4" | 80 | 2075 | 2075 | 2075 | 2075 | 2075 | 2075 | 2075 | 1992 | 1798 |
| 4" | 160 | 3376 | 3376 | 3376 | 3376 | 3376 | 3376 | 3376 | 3241 | 2926 |
| 5" | 40 | 1258 | 1258 | 1258 | 1258 | 1258 | 1258 | 1258 | 1208 | 1090 |
| 5" | 80 | 1857 | 1857 | 1857 | 1857 | 1857 | 1857 | 1857 | 1783 | 1610 |
| 5" | 160 | 3201 | 3201 | 3201 | 3201 | 3201 | 3201 | 3201 | 3073 | 2774 |
| 6" | 40 | 1143 | 1143 | 1143 | 1143 | 1143 | 1143 | 1143 | 1098 | 991 |
| 6" | 80 | 1794 | 1794 | 1794 | 1794 | 1794 | 1794 | 1794 | 1722 | 1554 |
| 6" | 160 | 3083 | 3083 | 3083 | 3083 | 3083 | 3083 | 3083 | 2960 | 2672 |
| 8" | 40 | 1006 | 1006 | 1006 | 1006 | 1006 | 1006 | 1006 | 966 | 872 |
| 8" | 80 | 1586 | 1586 | 1586 | 1586 | 1586 | 1586 | 1586 | 1523 | 1375 |
| 8" | 160 | 2976 | 2976 | 2976 | 2976 | 2976 | 2976 | 2976 | 2857 | 2579 |
| 10" | 40 | 913 | 913 | 913 | 913 | 913 | 913 | 913 | 876 | 791 |
| 10" | 80 | 1509 | 1509 | 1509 | 1509 | 1509 | 1509 | 1509 | 1448 | 1308 |
| 10" | 160 | 2950 | 2950 | 2950 | 2950 | 2950 | 2950 | 2950 | 2832 | 2557 |
| Nominal Pipe Size | Pipe Schedule | Outside Diameter | Inside Diameter | Wall Thickness |
|---|---|---|---|---|
| 0.75" | 40 | 1.05" | 0.824" | 0.113" |
| 0.75" | 80 | 1.05" | 0.742" | 0.154" |
| 0.75" | 160 | 1.05" | 0.612" | 0.219" |
| 1" | 40 | 1.315" | 1.049" | 0.133" |
| 1" | 80 | 1.315" | 0.957" | 0.179" |
| 1" | 160 | 1.315" | 0.815" | 0.25" |
| 1.25" | 40 | 1.66" | 1.38" | 0.14" |
| 1.25" | 80 | 1.66" | 1.278" | 0.191" |
| 1.25" | 160 | 1.66" | 1.16" | 0.25" |
| 1.5" | 40 | 1.9" | 1.61" | 0.145" |
| 1.5" | 80 | 1.9" | 1.5" | 0.2" |
| 1.5" | 160 | 1.9" | 1.338" | 0.281" |
| 2" | 40 | 2.375" | 2.067" | 0.154" |
| 2" | 80 | 2.375" | 1.939" | 0.218" |
| 2" | 160 | 2.375" | 1.687" | 0.344" |
| 2.5" | 40 | 2.875" | 2.469" | 0.203" |
| 2.5" | 80 | 2.875" | 2.323" | 0.276" |
| 2.5" | 160 | 2.875" | 2.125" | 0.375" |
| 3" | 40 | 3.5" | 3.068" | 0.216" |
| 3" | 80 | 3.5" | 2.9" | 0.3" |
| 3" | 160 | 3.5" | 2.804" | 0.438" |
| 3.5" | 40 | 4" | 3.548" | 0.226" |
| 3.5" | 80 | 4" | 3.364" | 0.318" |
| 3.5" | 160 | 4" | ||
| 4" | 40 | 4.5" | 4.026" | 0.237" |
| 4" | 80 | 4.5" | 3.826" | 0.337" |
| 4" | 160 | 4.5" | 3.438" | 0.531" |
| 5" | 40 | 5.563" | 5.047" | 0.258" |
| 5" | 80 | 5.563" | 4.813" | 0.375" |
| 5" | 160 | 5.563" | 4.313" | 0.625" |
| 6" | 40 | 6.625" | 6.065" | 0.28" |
| 6" | 80 | 6.625" | 5.761" | 0.432" |
| 6" | 160 | 6.625" | 5.187" | 0.719" |
| 8" | 40 | 8.625" | 7.981" | 0.322" |
| 8" | 60 | 8.625" | 7.625" | 0.5" |
| 8" | 180 | 8.625" | 6.813" | 0.906" |
| 10" | 40 | 10.75" | 10.02" | 0.365" |
| 10" | 80 | 10.75" | 9.562" | 0.594" |
| 10" | 160 | 10.75" | 8.5" | 1.125" |
| 12" | 40 | 12.75" | 11.938" | 0.406" |
| 12" | 80 | 12.75" | 11.374" | 0.688" |
| 12" | 160 | 12.75" | 10.126" | 1.312" |