Looking for steel pipe size charts? The ASME B36.10 and ASME B36.19 specifications cover the dimensions of seamless and welded steel pipes for high and low-temperature service, providing combinations of pipe outside and inside diameter (OD, ID), pipe thickness (WT, designated in “schedule”) and pipes theoretical weights (in pounds per foot and kilogram per meter). ASME B36.10 applies to carbon and alloy steel pipes (example A53, A106, A333, A335); ASME B36.19 applies to stainless steel, duplex, and nickel alloy pipes (like A312, A790, A928, B161, etc).
ASME B36.10 Pipe Size Chart (Carbon & Alloy Pipes)
ASME B36.10 WEIGHTS IN KILOGRAMS/METER
First line: wall thickness in mm; second line: pipes weight (in Kilograms per meter)
| NPS | OD mm | Sch. 5 | Sch. 10 | Sch. 20 | Sch. 30 | Sch. 40 | Sch. STD | Sch. 60 | Sch. 80 | Sch. XS | Sch. 100 | Sch. 120 | Sch. 140 | Sch. 160 | Sch. XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 10.287 | 0.089 0.21 | 1.24 0.28 | – | – | 1.73 0.37 | 1.73 0.37 | – | 2.41 0.47 | 2.41 0.47 | – | – | – | – | – |
| 1/4 | 13.716 | 1.24 0.38 | 1.65 0.49 | – | – | 2.24 0.63 | 2.24 0.63 | – | 3.02 0.80 | 3.02 0.80 | – | – | – | – | – |
| 3/8 | 17.145 | 1.24 0.49 | 1.65 0.63 | – | – | 2.31 0.84 | 2.31 0.84 | – | 3.20 1.10 | 3.20 1.10 | – | – | – | – | – |
| 1/2 | 21.34 | 1.65 0.80 | 2.11 1.00 | – | – | 2.77 1.62 | 2.77 1.62 | – | 3.73 0.80 | 3.73 0.80 | – | – | – | 4.78 1.95 | 7.47 2.55 |
| ¾ | 26.67 | 1.65 1.03 | 2.11 1.28 | – | – | 2.87 1.69 | 2.87 1.69 | – | 3.91 2.20 | 3.91 2.20 | – | – | – | 5.56 2.90 | 7.82 3.64 |
| 1 | 33.401 | 1.65 1.30 | 2.77 2.09 | – | – | 3.38 2.50 | 3.38 2.50 | – | 4.55 3.24 | 4.55 3.24 | – | – | – | 6.35 4.24 | 9.09 5.45 |
| 1 1/4 | 42.164 | 1.65 1.65 | 2.77 2.70 | – | – | 3.56 3.39 | 3.56 3.39 | – | 4.85 4.47 | 4.85 4.47 | – | – | – | 6.35 5.61 | 9.70 7.77 |
| 1 1/2 | 48.26 | 1.65 1.91 | 2.77 3.11 | – | – | 3.68 4.05 | 3.68 4.05 | – | 5.08 5.41 | 5.08 5.41 | – | – | – | 7.14 7.25 | 10.15 9.56 |
| 2 | 60.325 | 1.65 2.40 | 2.77 3.93 | – | – | 3.91 5.44 | 3.91 5.44 | – | 5.54 7.48 | 5.54 7.48 | – | – | – | 8.74 11.11 | 11.07 13.44 |
| 2 1/2 | 73.025 | 2.11 3.69 | 3.05 5.26 | – | – | 5.16 8.63 | 5.16 8.63 | – | 7.01 11.41 | 7.01 11.41 | – | – | – | 9.53 14.92 | 14.02 20.39 |
| 3 | 88.9 | 2.11 4.51 | 3.05 6.45 | 3.96 8.29 | 4.78 9.92 | 5.49 11.29 | 5.49 11.29 | – | 7.62 15.27 | 7.62 15.27 | – | – | – | 11.13 21.35 | 15.24 27.68 |
| 3 1/2 | 101.6 | 2.11 5.18 | 3.05 7.40 | – | – | 5.74 13.57 | 5.74 13.57 | – | 8.08 18.63 | 8.80 18.63 | – | – | – | 16.15 34.20 |
|
| 4 | 114.3 | 2.11 5.84 | 3.05 8.36 | 4.78 12.91 | 5.56 14.91 | 6.02 16.07 | 6.02 16.07 | 7.14 18.87 | 8.56 22.32 | 8.56 22.32 | – | 11.13 28.32 | – | 13.49 33.54 | 17.12 41.03 |
| 5 | 141.3 | 2.77 9.47 | 3.40 11.57 | 4.78 16.09 | 5.56 18.61 | 6.55 21.77 | 6.55 21.77 | 7.14 23.62 | 9.53 30.97 | 9.53 30.97 | – | 12.70 40.28 | – | 15.88 49.11 | 19.05 57.43 |
| 6 | 168.275 | 2.77 11.32 | 3.40 13.84 | 4.78 19.27 | 6.35 25.38 | 7.11 28.26 | 7.11 28.26 | 9.53 37.31 | 10.97 42.56 | 10.97 42.56 | 12.70 48.73 | 14.27 54.20 | – | 18.26 67.56 | 21.95 79.22 |
| 8 | 219.075 | 2.77 14.78 | 3.76 19.96 | 6.35 33.31 | 7.04 36.81 | 8.18 42.55 | 8.18 42.55 | 10.31 53.08 | 12.70 64.64 | 12.70 64.64 | 15.09 75.92 | 18.26 90.44 | 20.62 100.27 | 23.01 111.27 | 22.23 107.92 |
| 10 | 273.05 | 3.40 22.63 | 4.19 27.78 | 6.35 41.77 | 7.80 51.03 | 9.27 60.31 | 9.27 60.31 | 12.70 81.55 | 15.09 96.01 | 12.70 81.55 | 18.26 114.75 | 21.44 133.06 | 25.40 155.15 | 28.58 172.33 | 25.40 155.15 |
| 12 | 323.85 | 3.96 31.25 | 4.57 36.00 | 6.35 49.73 | 8.38 65.20 | 10.31 79.73 | 9.53 73.88 | 14.27 108.96 | 17.48 132.08 | 12.70 97.46 | 21.44 169.91 | 25.40 186.97 | 28.58 208.14 | 33.32 238.76 | 25.40 186.97 |
| 14 | 355.6 | 3.96 34.36 | 6.35 54.69 | 7.92 67.90 | 9.53 81.33 | 11.13 94.55 | 9.53 81.33 | 15.09 126.71 | 19.05 158.10 | 12.70 107.39 | 23.83 194.96 | 27.79 224.65 | 31.75 253.56 | 35.71 281.70 | – |
| 16 | 406.4 | 4.19 41.56 | 6.35 62.64 | 7.92 77.83 | 9.53 93.27 | 12.70 123.30 | 9.53 93.27 | 16.66 160.12 | 21.44 203.53 | 12.70 123.30 | 26.19 245.66 | 30.96 286.64 | 36.53 333.19 | 40.49 365.35 | – |
| 18 | 457.2 | 4.19 46.81 | 6.35 70.57 | 7.92 87.71 | 11.13 122.38 | 14.27 155.80 | 9.53 105.16 | 19.05 205.74 | 23.83 254.55 | 12.70 139.15 | 29.36 309.62 | 34.93 363.56 | 39.67 408.26 | 45.24 459.37 | – |
| 20 | 508 | – | 6.35 78.55 | 9.53 117.15 | 12.70 155.12 | 15.09 183.42 | 9.53 117.15 | 20.62 247.83 | 26.19 311.17 | 12.70 155.12 | 32.54 381.53 | 38.10 441.49 | 44.45 508.11 | 50.01 564.81 | – |
| 22 | 558.8 | – | 6.35 86.54 | 9.53 129.13 | 12.70 171.09 | 9.53 129.13 | 22.23 294.25 | 28.58 373.83 | 12.70 171.09 | 34.93 451.42 | 41.28 527.02 | 47.63 600.63 | 53.98 672.26 | – | |
| 24 | 609.6 | – | 6.35 94.53 | 9.53 141.12 | 14.27 209.64 | 17.48 255.41 | 9.53 141.12 | 24.61 355.26 | 30.96 442.08 | 12.70 187.06 | 38.89 547.71 | 46.02 640.03 | 52.37 720.15 | 59.54 808.22 | – |
| 26 | 660.4 | 6.35 102.36 | 7.92 127.36 | – | – | – | 9.53 152.87 | 10.31 165.18 | 12.70 202.72 | 14.27 227.23 | – | – | – | – | |
| 28 | 711.2 | 6.35 110.34 | 7.92 137.32 | – | – | – | 9.53 164.85 | 12.70 218.69 | – | – | – | – | – | ||
| 30 | 762 | 6.35 118.31 | 7.92 147.28 | 12.70 234.67 | 15.88 292.18 | – | 9.53 176.84 | 10.31 191.11 | 11.13 206.09 | 12.70 234.67 | – | – | – | – | – |
| 32 | 812.8 | 6.35 126.31 | 7.92 157.24 | – | – | – | 9.53 188.82 | 10.31 204.08 | 11.13 220.08 | 12.70 250.64 | – | – | – | – | – |
| 34 | 863.6 | 6.35 134.30 | 7.92 167.20 | – | – | – | 9.53 200.31 | 10.31 217.05 | 11.13 234.08 | 12.70 266.61 | – | – | – | – | – |
| 36 | 914.4 | 6.35 142.13 | 7.92 176.96 | 12.70 282.27 | 15.88 351.70 | 19.05 420.42 | 9.53 212.56 | 10.31 229.76 | 11.13 247.31 | 12.70 282.27 | – | – | – | – | – |
| 40 | 1016 | – | – | – | – | – | 9.53 236.53 | 12.70 314.22 | – | – | – | – | – | ||
| 42 | 1066.8 | 7.92 207.92 | – | – | – | – | 9.53 248.52 | 12.70 330.19 | – | – | – | – | – | ||
| 48 | 1219.2 | – | – | – | – | – | 9.53 284.24 | 12.70 377.79 | – | – | – | – | – |
ASME B36.10 WEIGHTS IN LBS/FOOT
First line: wall thickness in mm; second line: pipes weight (in Lbs per Foot)
| NPS | OD Inch. | 5S | 5 | 10S | 10 | 20 | 30 | 40S/STD. | 40 | 60 | 80S/XS | 80 | 100 | 120 | 140 | 160 | XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.405 | .035 .1383 | .049 .1863 | .049 .1863 | .068 .2447 | .068 .2447 | .095 .3145 | .095 .3145 | |||||||||
| 1/4 | 0.54 | .049 .2570 | .065 .3297 | .065 .3297 | .088 .4248 | .088 .4248 | .119 .5351 | .119 .5351 | |||||||||
| 3/8 | 0.675 | .049 .3276 | .065 .4235 | .065 .4235 | .091 .5676 | .091 .5676 | .126 .7338 | .126 .7338 | |||||||||
| 1/2 | 0.84 | .065 .5383 | .065 .5383 | .083 .6710 | .083 .6710 | .109 .8510 | .109 .8510 | .147 1.088 | .147 1.088 | .187 1.304 | .294 1.714 |
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| 3/4 | 1.05 | .065 .6838 | .065 .6838 | .083 .8572 | .083 .8572 | .113 1.131 | .113 1.131 | .154 1.474 | .154 1.474 | .218 1.937 | .308 2.441 |
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| 1 | 1.315 | .065 .8678 | .065 .8678 | .109 1.404 | .109 1.404 | .133 1.679 | .133 1.679 | .179 2.172 | .179 2.172 | .250 2.844 | .358 3.659 |
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| 1-1/4 | 1.66 | .065 1.107 | .065 1.107 | .109 1.806 | .109 1.806 | .140 2.273 | .140 2.273 | .191 2.997 | .191 2.997 | .250 3.765 | .382 5.214 |
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| 1-1/2 | 1.9 | .065 1.274 | .065 1.274 | .109 2.085 | .109 2.085 | .145 2.718 | .145 2.718 | .200 3.631 | .200 3.631 | .281 4.859 | .400 6.408 |
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| 2 | 2.375 | .065 1.604 | .065 1.604 | .109 2.638 | .109 2.638 | .154 3.653 | .154 3.653 | .218 5.022 | .218 5.022 | .343 7.444 | .436 9.029 |
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| 2-1/2 | 2.875 | .083 2.475 | .083 2.475 | .120 3.531 | .120 3.531 | .203 5.793 | .203 5.793 | .276 7.661 | .276 7.661 | .375 10.01 | .552 13.70 |
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| 3 | 3.5 | .083 3.029 | .083 3.029 | .120 4.332 | .120 4.332 | .216 7.576 | .216 7.576 | .300 10.25 | .300 10.25 | .437 14.32 | .600 18.58 |
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| 3-1/2 | 4 | .083 3.472 | .083 3.472 | .120 4.973 | .120 4.973 | .226 9.109 | .226 9.109 | .318 12.51 | .318 12.51 | .636 22.85 |
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| 4 | 4.5 | .083 3.915 | .083 3.915 | .120 5.613 | .120 5.613 | .237 10.79 | .237 10.79 | .281 12.66 | .337 14.98 | .337 14.98 | .437 19.01 | .531 22.51 | .674 27.54 |
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| 4-1/2 | 5 | .247 12.53 | .355 17.61 | .710 32.53 |
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| 5 | 5.563 | .109 6.349 | .109 6.349 | .134 7.770 | .134 7.770 | .258 14.62 | .258 14.62 | .375 20.78 | .375 20.78 | .500 27.04 | .625 32.96 | .750 38.55 |
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| 6 | 6.625 | .109 7.585 | .109 7.585 | .134 9.290 | .134 9.290 | .280 18.97 | .280 18.97 | .432 28.57 | .432 28.57 | .562 36.39 | .718 45.3 | .864 53.16 |
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| 7 | 7.625 | .301 23.57 | .500 38.05 | .875 63.08 |
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| 8 | 8.625 | 0.109 | 0.109 | .148 13.40 | .148 13.40 | .250 22.36 | .277 24.70 | .322 28.55 | .322 28.55 | .406 35.64 | .500 43.39 | .500 43.39 | .593 50.87 | .718 60.93 | .812 67.76 | .906 74.69 | .885 72.42 |
| 9 | 9.625 | .342 33.9 | .500 48.72 | ||||||||||||||
| 10 | 10.75 | .134 15.19 | .134 15.19 | .165 18.65 | .165 18.65 | .250 28.04 | .307 34.24 | .365 40.48 | .365 40.48 | .500 54.74 | .500 54.74 | .593 64.33 | .718 76.93 | .843 89.20 | 1.000 104.1 | 1.125 115.7 | |
| 11 | 11.75 | .375 45.55 | .500 60.07 | ||||||||||||||
| 12 | 12.75 | .156 21.07 | .165 22.18 | .180 24.17 | .180 24.17 | .250 33.38 | .307 34.24 | .365 40.48 | .365 40.48 | .500 54.74 | .500 54.74 | .593 64.33 | .718 76.93 | .843 89.20 | 1.000 104.1 | 1.125 115.7 | |
| 14 | 14 | .156 23.07 | .188 27.73 | .250 36.71 | .312 45.38 | .375 54.57 | .375 54.57 | .437 63.37 | .593 84.91 | .500 72.09 | .750 106.1 | .937 130.7 | 1.093 150.7 | 1.250 170.2 | 1.406 189.1 | ||
| 16 | 16 | .165 27.90 | .188 31.75 | .250 42.05 | .312 52.36 | .375 62.58 | .375 62.58 | .500 82.77 | .656 107.5 | .500 82.77 | .843 136.5 | 1.031 164.8 | 1.218 192.3 | 1.427 223.5 | 1.593 245.1 | ||
| 18 | 18 | .165 31.43 | .188 35.76 | .250 47.39 | .312 59.03 | .437 82.06 | .375 70.59 | .562 104.2 | .750 138.2 | .500 93.45 | .937 170.8 | 1.156 208.0 | 1.375 244.1 | 1.562 274.2 | 1.781 308.5 | ||
| 20 | 20 | .188 39.78 | .218 46.05 | .250 52.73 | .375 78.6 | .500 104.1 | .375 78.6 | .593 122.9 | .812 166.4 | .500 104.1 | 1.031 208.9 | 1.280 256.1 | 1.500 296.4 | 1.750 341.1 | 1.968 379.0 | ||
| 22 | 22 | .188 43.8 | .218 50.71 | .250 58.07 | .375 86.61 | .500 114.81 | .375 86.61 | .875 197.41 | .500 114.81 | 1.125 250.81 | 1.375 302.88 | 1.625 353.61 | 1.875 403.0 | 2.125 451.06 | |||
| 24 | 24 | .218 55.37 | .250 63.41 | .250 63.41 | .375 94.62 | .562 140.8 | .375 94.62 | .687 171.2 | .968 238.1 | .500 125.5 | 1.218 296.4 | 1.531 367.4 | 1.812 429.4 | 2.062 483.1 | 2.344 542.13 | ||
| 26 | 26 | .312 85.60 | .500 136.17 | .375 102.63 | .500 136.17 | ||||||||||||
| 28 | 28 | .312 92.26 | .500 146.85 | .625 182.73 | .375 110.64 | ||||||||||||
| 30 | 30 | .250 79.43 | .312 98.93 | .312 98.93 | .500 157.53 | .625 196.08 | .375 118.65 | .500 157.53 | |||||||||
| 32 | 32 | .312 105.59 | .500 168.21 | .625 209.43 | .375 126.66 | .688 230.08 | .500 168.21 | ||||||||||
| 34 | 34 | .312 112.25 | .500 178.89 | .625 222.78 | .375 134.667 | .688 244.77 | |||||||||||
| 36 | 36 | .312 118.92 | .625 236.13 | .375 142.68 | .750 262.35 | .500 189.57 |
ASME B36.19 Pipe Size Chart (Stainless & Nickel Pipes)
ASME B36.19 WEIGHTS IN KG/METER
Dimensions and weights (in KG/meter) of stainless steel, nickel alloy and non-ferrous pipes
| Sch. 5S | Sch 10S | Sch 40S | Sch 80S | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| OD mm | OD inch | WT mm (WT in) | kg/m | WT mm (WT in) | kg/m | WT mm (WT in) | kg/m | WT mm (WT in) | kg/m | |
| 1/8 | 10.3 | 0.405 | – | – | 1.25 (0.049) | 0.28 | 1.73 (0.068) | 0.37 | 2.42 (0.095) | 0.47 |
| 1/4 | 13.7 | 0.54 | – | – | 1.66 (0.065) | 0.49 | 2.24 (0.088) | 0.63 | 3.03 (0.119) | 0.8 |
| 3/8 | 17.2 | 0.675 | – | – | 1.66 (0.065) | 0.63 | 2.32 (0.091) | 0.85 | 3.20 (0.126) | 1.1 |
| 1/2 | 21.3 | 0.84 | 1.65 (0.065) | 0.81 | 2.11 (0.083) | 1 | 2.77 (0.109) | 1.27 | 3.74 (0.147) | 1.62 |
| 3/4 | 26.7 | 1.05 | 1.65 (0.065) | 1.02 | 2.11 (0.083) | 1.28 | 2.87 (0.113) | 1.68 | 3.92 (0.154) | 2.2 |
| 1 | 33.4 | 1.315 | 1.65 (0.065) | 1.3 | 2.77 (0.109) | 2.09 | 3.38 (0.133) | 2.5 | 4.55 (0.179) | 3.24 |
| 1 1/4 | 42.2 | 1.66 | 1.65 (0.065) | 1.66 | 2.77 (0.109) | 2.69 | 3.56 (0.140) | 3.39 | 4.86 (0.191) | 4.47 |
| 1 1/2 | 48.3 | 1.9 | 1.65 (0.065) | 1.91 | 2.77 (0.109) | 3.11 | 3.69 (0.145) | 4.06 | 5.08 (0.200) | 5.41 |
| 2 | 60.3 | 2.375 | 1.65 (0.065) | 2.4 | 2.77 (0.109) | 3.93 | 3.92 (0.154) | 5.45 | 5.54 (0.218) | 7.49 |
| 2 1/2 | 73 | 2.875 | 2.11 (0.083) | 3.69 | 3.05 (0.120) | 5.26 | 5.16 (0.203) | 8.64 | 7.01 (0.276) | 11.4 |
| 3 | 88.9 | 3.5 | 2.11 (0.083) | 4.52 | 3.05 (0.120) | 6.46 | 5.49 (0.216) | 11.3 | 7.62 (0.300) | 15.3 |
| 3 1/2 | 101.6 | 4 | 2.11 (0.083) | 5.18 | 3.05 (0.120) | 7.41 | 5.74 (0.226) | 13.6 | 8.08 (0.318) | 18.6 |
| 4 | 114.3 | 4.5 | 2.11 (0.083) | 5.84 | 3.05 (0.120) | 8.37 | 6.02 (0.237) | 16.1 | 8.56 (0.337) | 22.3 |
| 5 | 141.3 | 5.563 | 2.77 (0.109) | 9.46 | 3.41 (0.134) | 11.6 | 6.56 (0.258) | 21.8 | 9.53 (0.375) | 31 |
| 6 | 168.3 | 6.625 | 2.77 (0.109) | 11.3 | 3.41 (0.134) | 13.9 | 7.12 (0.280) | 28.3 | 10.98 (0.432) | 42.6 |
| 8 | 219.1 | 8.625 | 2.77 (0.109) | 14.8 | 3.76 (0.148) | 20 | 8.18 (0.322) | 42.5 | 12.70 (0.500) | 64.6 |
| 10 | 273.1 | 10.75 | 3.41 (0.134) | 22.7 | 4.20 (0.165) | 27.8 | 9.28 (0.365) | 60.4 | 12.70 (0.500) | 81.5 |
| 12 | 323.9 | 12.75 | 3.97 (0.156) | 31.3 | 4.58 (0.180) | 36.1 | 9.53 (0.375) | 73.9 | 12.70 (0.500) | 97.4 |
ASME B36.19 WEIGHTS IN LBS/FT.
| NPS | OD (mm) | OD (inch) | Sch 5S | Weight | Sch 10S | Weight | Sch 40S | Weight | Sch 80S | Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm (inch) | lbs/ft. | mm (inch) | lbs/ft. | mm (inch) | lbs/ft. | mm (inch) | lbs/ft. | |
| 1/8 | 10.3 | 0.405 | – | – | 1.25 (0.049) | 0.19 | 1.73 (0.068) | 0.25 | 2.42 (0.095) | 0.32 |
| 1/4 | 13.7 | 0.54 | – | – | 1.66 (0.065) | 0.33 | 2.24 (0.088) | 0.42 | 3.03 (0.119) | 0.54 |
| 3/8 | 17.2 | 0.675 | – | – | 1.66 (0.065) | 0.42 | 2.32 (0.091) | 0.57 | 3.20 (0.126) | 0.74 |
| 1/2 | 21.3 | 0.84 | 1.65 (0.065) | 0.54 | 2.11 (0.083) | 0.67 | 2.77 (0.109) | 0.85 | 3.74 (0.147) | 1.09 |
| 3/4 | 26.7 | 1.05 | 1.65 (0.065) | 0.69 | 2.11 (0.083) | 0.86 | 2.87 (0.113) | 1.13 | 3.92 (0.154) | 1.48 |
| 1 | 33.4 | 1.315 | 1.65 (0.065) | 0.87 | 2.77 (0.109) | 1.4 | 3.38 (0.133) | 1.68 | 4.55(0.179) | 2.18 |
| 1 1/4 | 42.2 | 1.66 | 1.65 (0.065) | 1.12 | 2.77 (0.109) | 1.81 | 3.56 (0.140) | 2.28 | 4.86 (0.191) | 3 |
| 1 1/2 | 48.3 | 1.9 | 1.65 (0.065) | 1.28 | 2.77 (0.109) | 2.09 | 3.69 (0.145) | 2.73 | 5.08 (0.200) | 3.64 |
| 2 | 60.3 | 2.375 | 1.65 (0.065) | 1.61 | 2.77 (0.109) | 2.64 | 3.92 (0.154) | 3.66 | 5.54 (0.218) | 5.03 |
| 2 1/2 | 73 | 2.875 | 2.11 (0.083) | 2.48 | 3.05 (0.120) | 3.53 | 5.16 (0.203) | 5.81 | 7.01 (0.276) | 7.66 |
| 3 | 88.9 | 3.5 | 2.11 (0.083) | 3.04 | 3.05 (0.120) | 4.34 | 5.49 (0.216) | 7.59 | 7.62 (0.300) | 10.28 |
| 3 1/2 | 101.6 | 4 | 2.11 (0.083) | 3.48 | 3.05 (0.120) | 4.98 | 5.74 (0.226) | 9.14 | 8.08 (0.318) | 12.5 |
| 4 | 114.3 | 4.5 | 2.11 (0.083) | 3.92 | 3.05 (0.120) | 5.62 | 6.02 (0.237) | 10.82 | 8.56 (0.337) | 14.98 |
| 5 | 141.3 | 5.563 | 2.77 (0.109) | 6.36 | 3.41 (0.134) | 7.79 | 6.56 (0.258) | 14.65 | 9.53 (0.375) | 20.83 |
| 6 | 168.3 | 6.625 | 2.77 (0.109) | 7.59 | 3.41 (0.134) | 9.34 | 7.12 (0.280) | 19.02 | 10.9 (0.432) | 28.63 |
| 8 | 219.1 | 8.625 | 2.77 (0.109) | 9.95 | 3.76 (0.148) | 13.44 | 8.18 (0.322) | 28.56 | 12.7 (0.500) | 43.41 |
| 10 | 273.1 | 10.75 | 3.41 (0.134) | 15.25 | 4.20 (0.165) | 18.68 | 9.28 (0.365) | 40.59 | 12.7 (0.500) | 54.77 |
| 12 | 323.9 | 12.75 | 3.97 (0.156) | 21.03 | 4.58 (0.180) | 24.26 | 9.53 (0.375) | 49.66 | 12.7 (0.500) | 65.45 |
Steel Pipes Tolerances
PIPES DIAMETER TOLERANCE
| PIPE NPS/ DN/ OD | Allowed Outside Diameter Tolerance | |||
|---|---|---|---|---|
| Over | Under | |||
| inches | mm | inches | mm | |
| NPS 1/8 to 1½ DN 6 to 40 OD 10.3 to 48.3, mm |
1/64 | 0.4 | 1/64 | 0.4 |
| Over 1½ to 4 DN 40 to 100 OD 48.3 to 114.3 mm |
1/32 | 0.8 | 1/32 | 0.8 |
| Over 4 to 8 DN 100 to 200 OD 114.3 to 219.1 mm |
1/16 | 1.6 | 1/32 | 0.8 |
| Over 8 to 18 DN 200 to 450 OD 219.1 to 457 mm |
3/32 | 2.4 | 1/32 | 0.8 |
| Over 18 to 26 DN 450 to 650 OD 457 to 660 mm |
1/8 | 3.2 | 1/32 | 0.8 |
PIPES THICKNESS TOLERANCE
| PIPE NPS/ DN/ OD | Tolerance, % from Nominal | |
|---|---|---|
| Over | Under | |
| NPS 1/8 to 2½, all t/D ratios DN 6 to 65 OD 10.3 to 73.0, mm |
20.0 | 12.5 |
| NPS 3 to 18, t/D up to 5% DN 80 to 450 OD 88.9 to 457 mm |
22.5 | 12.5 |
| NPS 3 to 18, t/D ＞ 5% DN 80 to 450 OD 88.9 to 457 mm |
15.0 | 12.5 |
| NPS 20 and larger, welded, all t/D ratios DN 500 OD 508 mm |
17.5 | 12.5 |
| NPS 20 and larger, seamless, t/D up to 5% DN 500 OD 508 mm |
22.5 | 12.5 |
| NPS 20 and larger, seamless, t/D ＞ 5% DN 500 OD 508 mm |
15.0 | 12. |
PIPES WEIGHT TOLERANCE
The pipes’ weight tolerance depends on the nominal pipe size, as listed below:
- Pipe of NPS 4 (DN100, 114.3mm) and smaller may be weighed in convenient lots; pipe in sizes larger than NPS 4 shall be weighed separately
- Pipes NPS 12 (DN300, 323.8mm) and under, weight tolerance is: -3.5% / +10%
- Pipes over NPS 12 (DN300, 323.8mm),weight tolerance is: -5% / +10%
PIPES QUANTITY TOLERANCE
Should be within -10% to +10% tolerance, as a rule of thumb (-3/+3% should be acceptable)
PIPES LENGTH TOLERANCE
- Seamless and Welded (no filler metal added): if cut lengths are ordered, no length of pipe shall be under the length specified and not more than 1/4 in. (6.35 mm) over that specified.
- Forged and Bored, Cast, and Cast Cold-Wrought: if definite cut lengths are ordered, no length of pipe shall be under the length specified and not more than 1/8 in. (3.2 mm) over that specified.
- For pipe ordered to random lengths, the lengths and variations shall be agreed upon between the manufacturer and the buyer
NPS to DN Conversion Chart
The table shows the conversion between NPS and the pipe outside diameter in inches, mm and DN (nominal diameter):
| PIPE NPS | Pipe outside diameter in inches |
PIpe outside diameter in mm |
NPS to DN conversion |
|---|---|---|---|
| 1/8 | 0.404 | 10.26 | 6 |
| 1/4 | 0.54 | 13.72 | 8 |
| 3/8 | 0.675 | 17.15 | 10 |
| 1/2 | 0.84 | 21.34 | 15 |
| ¾ | 1.05 | 26.67 | 20 |
| 1 | 1.315 | 33.40 | 25 |
| 1 ¼ | 1.66 | 42.16 | 32 |
| 1 ½ | 1.9 | 48.26 | 40 |
| 2 | 2.375 | 60.33 | 50 |
| 2 ½ | 2.875 | 73.03 | 65 |
| 3 | 3.5 | 88.90 | 80 |
| 3 ½ | 4 | 101.60 | 90 |
| 4 | 4.5 | 114.30 | 100 |
| 4 ½ | 5 | 127.00 | 115 |
| 5 | 5.563 | 141.30 | 125 |
| 6 | 6.625 | 168.28 | 150 |
| 7 | 7.625 | 193.68 | — |
| 8 | 8.625 | 219.08 | 200 |
| 10 | 10.75 | 273.05 | 250 |
| 12 | 12.75 | 323.85 | 300 |
| 14 | 14 | 355.60 | 350 |
| 16 | 16 | 406.40 | 400 |
| 18 | 18 | 457.20 | 450 |
| 20 | 20 | 508.00 | 500 |
| 22 | 22 | 558.80 | 550 |
| 24 | 24 | 609.60 | 600 |
| 26 | 26 | 660.40 | 650 |
| 28 | 28 | 711.20 | 700 |
| 30 | 30 | 762.00 | 750 |
| 32 | 32 | 812.80 | 800 |
| 34 | 34 | 863.60 | 850 |
| 36 | 36 | 914.40 | 900 |
| 38 | 38 | 965.20 | 950 |
| 40 | 40 | 1016.00 | 1000 |
| 42 | 42 | 1066.80 | 1050 |
| 44 | 44 | 1117.60 | 1100 |
| 46 | 46 | 1168.40 | 1150 |
| 48 | 48 | 1219.20 | 120 |
Sources:
We recommend purchasing the ASME pipe size specifications from the ASME website or from the IHS store to have a complete a proper understanding of the pipe dimensions topic.
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4 Responses
what did “M” stand in ASME B 36.19M?
code and std for welded pipe angle
Dear Sir/Madam,
Please kindly provide us with detailed quote including price, weight/packaging dimension, lead time and shipment cost for the item
stated below;
6.1 PIPE: 1/2 IN, SEAMLESS ASME B36.10M
QTYT:1 Joint
PIPE: 1/2 IN, SEAMLESS ASME B36.10M PLAIN END SCHEDULE 160 STAINLESS STEEL ASTM A312 GRADE TP316/TP316L (DUAL-STAMPED) PPAACABZBKIALZ
Manufacturer (MA) – GENOYER SA
Find Shipping Address below;
10511 Kipp Way, Suite 430
SCL NG1325
Houston, Texas, 77099
Regards,
Chibuzor
Procurement Personnel
Kamax Int. Corp. ltd.
Laxmi pipe Industries is leading ss pipe manufacturer . We are also manufactures and exporter of steel pipes & tubes.