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ASME B36.19M is the standard specification for both welded and seamless stainless steel pipes. These stainless steel pipes may be used for high or low temperatures and pressures. This dimensional standard not only can be applied to wrought stainless steel pipes but can also be extensively applied to non-ferrous alloy pipes such as titanium, zirconium, copper and aluminum. Pipes conforming to ASME B36.19M dimensions shall be manufactured in accordance with relative ASTM and ASME material specification. The variations in dimensions or dimensional tolerances differ depending upon the method of manufacture employed in making the pipe to various specifications available. Permissible variations or tolerances are indicated in each specification.
ASME B36.19M covers dimensions of pipes sized from NPS 1/8 (DN 6) to NPS 30 (DN 750). Sizes larger than 30″ are also commercially available in accordance with ASME B36.10M. Pipes NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding nominal sizes. Pipes NPS 14 (DN 350) and larger have outside diameter numerically equal to the corresponding nominal sizes. Pipes conforming to ASME B36.19M may be furnished with plain ends (PE), butt welding ends (BW), threaded ends, and grooved ends.
There are 4 schedule designations for stainless steel pipes conforming to ASME B36.19M: SCH 5S, SCH 10S, SCH 40S, SCH 80S. The nominal wall thicknesses for NPS 14 (DN 350) to NPS 22 (DN 550), inclusive, of SCH 10S; NPS 12 (DN 300) of SCH 40S; and NPS 10 and NPS 12 (DN 250 and DN 300) of SCH 80S are not the same as those of ASME B36.10M. The suffix “S” in the schedule number is used to differentiate B36.19M pipe from B36.10 pipe. The selection of wall thickness for a particular application shall be in conformance to relevant requirements prescribed by ASME Boiler and Pressure Vessel Codes or ASME B31 Codes.
The nominal weights (masses) of stainless steel pipe can be calculated using the following two formulas (if the formulas are applied to non-ferrous materials other than steel such as titanium, zirconium, or copper alloy, distinctive rectification factor shall be multiplied for each):
NPS (DN) | SCH No. | O.D inch mm | W.T inch mm | Mass lb/ft kg/m |
---|---|---|---|---|
1/8 6 | 5S | 0.405 10.3 | ... | ... |
1/8 6 | 10S | 0.405 10.3 | 0.049 1.24 | 0.19 0.28 |
1/8 6 | 40S | 0.405 10.3 | 0.068 1.73 | 0.24 0.37 |
1/8 6 | 80S | 0.405 10.3 | 0.095 2.41 | 0.31 0.47 |
1/4 8 | 5S | 0.540 13.7 | ... | ... |
1/4 8 | 10S | 0.540 13.7 | 0.065 1.65 | 0.33 0.49 |
1/4 8 | 40S | 0.540 13.7 | 0.088 2.24 | 0.43 0.63 |
1/4 8 | 80S | 0.540 13.7 | 0.119 3.02 | 0.54 0.80 |
3/8 10 | 5S | 0.675 17.1 | ... | ... |
3/8 10 | 10S | 0.675 17.1 | 0.065 1.65 | 0.42 0.63 |
3/8 10 | 40S | 0.675 17.1 | 0.091 2.31 | 0.57 0.84 |
3/8 10 | 80S | 0.675 17.1 | 0.126 3.20 | 0.74 1.10 |
1/2 15 | 5S | 0.840 21.3 | 0.065 1.65 | 0.54 0.80 |
1/2 15 | 10S | 0.840 21.3 | 0.083 2.11 | 0.67 1.00 |
1/2 15 | 40S | 0.840 21.3 | 0.109 2.77 | 0.85 1.27 |
1/2 15 | 80S | 0.840 21.3 | 0.147 3.73 | 1.09 1.62 |
3/4 20 | 5S | 1.050 26.7 | 0.065 1.65 | 0.68 1.02 |
3/4 20 | 10S | 1.050 26.7 | 0.083 2.11 | 0.86 1.28 |
3/4 20 | 40S | 1.050 26.7 | 0.113 2.87 | 1.13 1.69 |
3/4 20 | 80S | 1.050 26.7 | 0.154 3.91 | 1.48 2.20 |
1 25 | 5S | 1.315 33.4 | 0.065 1.65 | 0.68 1.02 |
1 25 | 10S | 1.315 33.4 | 0.083 2.11 | 0.86 1.28 |
1 25 | 40S | 1.315 33.4 | 0.133 3.38 | 1.68 2.50 |
1 25 | 80S | 1.315 33.4 | 0.179 4.55 | 2.17 3.24 |
1-1/4 32 | 5S | 1.660 42.2 | 0.065 1.65 | 1.11 1.65 |
1-1/4 32 | 10S | 1.660 42.2 | 0.109 2.77 | 1.81 2.69 |
1-1/4 32 | 40S | 1.660 42.2 | 0.140 3.56 | 2.27 3.39 |
1-1/4 32 | 80S | 1.660 42.2 | 0.191 4.85 | 3.00 4.47 |
1-1/2 40 | 5S | 1.900 48.3 | 0.065 1.65 | 1.28 1.90 |
1-1/2 40 | 10S | 1.900 48.3 | 0.109 2.77 | 2.09 3.11 |
1-1/2 40 | 40S | 1.900 48.3 | 0.145 3.68 | 2.72 4.05 |
1-1/2 40 | 80S | 1.900 48.3 | 0.200 5.08 | 3.63 5.41 |
2 50 | 5S | 2.375 60.3 | 0.065 1.65 | 1.61 2.39 |
2 50 | 10S | 2.375 60.3 | 0.109 2.77 | 2.64 3.93 |
2 50 | 40S | 2.375 60.3 | 0.154 3.91 | 3.66 5.44 |
2 50 | 80S | 2.375 60.3 | 0.218 5.54 | 5.03 7.48 |
2-1/2 65 | 5S | 2.875 73 | 0.083 2.11 | 2.48 3.69 |
2-1/2 65 | 10S | 2.875 73 | 0.120 3.05 | 3.53 5.26 |
2-1/2 65 | 40S | 2.875 73 | 0.203 5.16 | 5.80 8.63 |
2-1/2 65 | 80S | 2.875 73 | 0.276 7.01 | 7.67 11.41 |
3 80 | 5S | 3.500 88.9 | 0.083 2.11 | 3.03 4.52 |
3 80 | 10S | 3.500 88.9 | 0.120 3.05 | 4.34 6.46 |
3 80 | 40S | 3.500 88.9 | 0.216 5.49 | 7.58 11.29 |
3 80 | 80S | 3.500 88.9 | 0.300 7.62 | 10.26 15.27 |
3-1/2 90 | 5S | 4.000 101.6 | 0.083 2.11 | 3.48 5.18 |
3-1/2 90 | 10S | 4.000 101.6 | 0.120 3.05 | 4.98 7.41 |
3-1/2 90 | 40S | 4.000 101.6 | 0.226 5.74 | 9.12 13.57 |
3-1/2 90 | 80S | 4.000 101.6 | 0.318 8.08 | 12.52 18.64 |
4 100 | 5S | 4.500 114.3 | 0.083 2.11 | 3.92 5.84 |
4 100 | 10S | 4.500 114.3 | 0.120 3.05 | 5.62 8.37 |
4 100 | 40S | 4.500 114.3 | 0.237 6.02 | 10.80 16.08 |
4 100 | 80S | 4.500 114.3 | 0.337 8.56 | 15.00 22.32 |
5 125 | 5S | 5.563 141.3 | 0.109 2.77 | 6.36 9.46 |
5 125 | 10S | 5.563 141.3 | 0.134 3.40 | 7.78 11.56 |
5 125 | 40S | 5.563 141.3 | 0.258 6.55 | 14.63 21.77 |
5 125 | 80S | 5.563 141.3 | 0.375 9.53 | 20.80 30.97 |
6 150 | 5S | 6.625 168.3 | 0.109 2.77 | 7.59 11.31 |
6 150 | 10S | 6.625 168.3 | 0.134 3.40 | 9.30 13.83 |
6 150 | 40S | 6.625 168.3 | 0.280 7.11 | 18.99 28.26 |
6 150 | 80S | 6.625 168.3 | 0.432 10.97 | 28.60 42.56 |
NPS (DN) | SCH No. | O.D inch mm | W.T inch mm | Mass lb/ft kg/m |
---|---|---|---|---|
8 200 | 5S | 8.625 219.1 | 0.109 2.77 | 9.92 14.78 |
8 200 | 10S | 8.625 219.1 | 0.148 3.76 | 13.41 19.97 |
8 200 | 40S | 8.625 219.1 | 0.322 8.18 | 28.58 42.55 |
8 200 | 80S | 8.625 219.1 | 0.500 12.70 | 43.43 64.64 |
10 250 | 5S | 10.750 273.0 | 0.134 3.40 | 15.21 22.61 |
10 250 | 10S | 10.750 273.0 | 0.165 4.19 | 18.67 27.78 |
10 250 | 40S | 10.750 273.0 | 0.365 9.27 | 40.52 60.29 |
10 250 | 80S | 10.750 273.0 | 0.500 12.70 | 54.79 81.53 |
12 300 | 5S | 12.750 323.8 | 0.156 3.96 | 21.00 31.24 |
12 300 | 10S | 12.750 323.8 | 0.180 4.57 | 24.19 35.98 |
12 300 | 40S | 12.750 323.8 | 0.375 9.53 | 49.61 73.86 |
12 300 | 80S | 12.750 323.8 | 0.500 12.70 | 65.48 97.44 |
14 350 | 5S | 14.000 355.6 | 0.156 3.96 | 23.09 34.34 |
14 350 | 10S | 14.000 355.6 | 0.188 4.78 | 27.76 41.36 |
14 350 | 40S | 14.000 355.6 | 0.375 9.53 | 54.62 81.33 |
14 350 | 80S | 14.000 355.6 | 0.500 12.70 | 72.16 41.56 |
16 400 | 5S | 16.000 406.4 | 0.165 4.19 | 27.93 41.56 |
16 400 | 10S | 16.000 406.4 | 0.188 4.78 | 31.78 47.34 |
16 400 | 40S | 16.000 406.4 | 0.375 9.53 | 62.64 93.27 |
16 400 | 80S | 16.000 406.4 | 0.500 12.70 | 82.85 123.31 |
18 450 | 5S | 18.000 457 | 0.165 4.19 | 31.46 46.79 |
18 450 | 10S | 18.000 457 | 0.188 4.78 | 35.80 53.31 |
18 450 | 40S | 18.000 457 | 0.375 9.53 | 70.65 ... |
18 450 | 80S | 18.000 457 | 0.500 12.70 | 93.54 ... |
20 500 | 5S | 20.000 508 | 0.188 4.78 | 39.82 59.32 |
20 500 | 10S | 20.000 508 | 0.218 5.54 | 46.10 68.65 |
20 500 | 40S | 20.000 508 | 0.375 9.53 | 78.67 117.15 |
20 500 | 80S | 20.000 508 | 0.500 12.70 | 104.23 155.13 |
22 550 | 5S | 22.000 559 | 0.188 4.78 | 43.84 65.33 |
22 550 | 10S | 22.000 559 | 0.218 5.54 | 50.76 75.62 |
22 550 | 40S | 22.000 559 | ... | ... |
22 550 | 80S | 22.000 559 | ... | ... |
24 600 | 5S | 24.000 610 | 0.218 5.54 | 55.42 82.58 |
24 600 | 10S | 24.000 610 | 0.250 6.35 | 63.47 141.12 |
24 600 | 40S | 24.000 610 | 0.375 9.53 | 94.71 141.12 |
24 600 | 80S | 24.000 610 | 0.500 12.70 | 125.61 187.07 |
30 750 | 5S | 30.000 762 | 0.250 6.35 | 79.51 118.34 |
30 750 | 10S | 30.000 762 | 0.312 7.92 | 99.02 147.29 |
30 750 | 40S | 30.000 762 | ... | ... |
30 750 | 80S | 30.000 762 | ... | ... |