Applicable to seamless & welded stainless steel pipe (304 / 304L / 316 / 316L).
Calculation basis: Density 7.93 g/cm³ for 304 series; 7.98 g/cm³ for 316L series.
| NPS (Nominal Pipe Size, inch) | DN Nominal Diameter | Outer Diameter (mm) | Schedule | Wall Thickness (mm) | Theoretical Weight 304 (kg/m) | Theoretical Weight 316L (kg/m) |
| 1/8″ | DN6 | 10.3 | 5S | 0.85 | 0.2 | 0.2 |
| 10S | 1.24 | 0.27 | 0.27 | |||
| 40S | 1.73 | 0.35 | 0.36 | |||
| 80S | 2.41 | 0.46 | 0.47 | |||
| 1/4″ | DN8 | 13.7 | 5S | 1.09 | 0.29 | 0.29 |
| 10S | 1.65 | 0.44 | 0.44 | |||
| 40S | 2.24 | 0.57 | 0.58 | |||
| 80S | 3.02 | 0.73 | 0.74 | |||
| 3/8″ | DN10 | 17.1 | 5S | 1.09 | 0.37 | 0.37 |
| 10S | 1.65 | 0.58 | 0.59 | |||
| 40S | 2.31 | 0.79 | 0.8 | |||
| 80S | 3.2 | 1.04 | 1.05 | |||
| 1/2″ | DN15 | 21.3 | 5S | 1.65 | 0.73 | 0.74 |
| 10S | 2.11 | 0.92 | 0.93 | |||
| 40S | 2.77 | 1.17 | 1.18 | |||
| 80S | 3.73 | 1.51 | 1.52 | |||
| 3/4″ | DN20 | 26.9 | 5S | 1.65 | 0.94 | 0.95 |
| 10S | 2.11 | 1.19 | 1.2 | |||
| 40S | 2.87 | 1.56 | 1.58 | |||
| 80S | 3.91 | 2.03 | 2.05 | |||
| 1″ | DN25 | 33.7 | 5S | 1.65 | 1.2 | 1.21 |
| 10S | 2.11 | 1.52 | 1.53 | |||
| 40S | 3.38 | 2.26 | 2.29 | |||
| 80S | 4.55 | 2.93 | 2.96 | |||
| 1-1/4″ | DN32 | 42.4 | 5S | 1.65 | 1.53 | 1.54 |
| 10S | 2.11 | 1.95 | 1.97 | |||
| 40S | 3.56 | 2.94 | 2.97 | |||
| 80S | 4.85 | 3.84 | 3.88 | |||
| 1-1/2″ | DN40 | 48.3 | 5S | 1.65 | 1.75 | 1.77 |
| 10S | 2.11 | 2.23 | 2.25 | |||
| 40S | 3.68 | 3.47 | 3.5 | |||
| 80S | 5.08 | 4.57 | 4.62 | |||
| 2″ | DN50 | 60.3 | 5S | 1.65 | 2.21 | 2.23 |
| 10S | 2.11 | 2.82 | 2.84 | |||
| 40S | 3.91 | 4.54 | 4.58 | |||
| 80S | 5.54 | 6.18 | 6.24 | |||
| 2-1/2″ | DN65 | 73 | 5S | 2.11 | 3.51 | 3.54 |
| 10S | 2.77 | 4.54 | 4.58 | |||
| 40S | 5.16 | 7.95 | 8.01 | |||
| 80S | 7.01 | 10.4 | 10.48 | |||
| 3″ | DN80 | 88.9 | 5S | 2.11 | 4.3 | 4.34 |
| 10S | 2.77 | 5.57 | 5.62 | |||
| 40S | 5.49 | 9.92 | 10 | |||
| 80S | 7.62 | 13.4 | 13.5 | |||
| 4″ | DN100 | 114.3 | 5S | 2.11 | 5.56 | 5.61 |
| 10S | 2.77 | 7.22 | 7.28 | |||
| 40S | 6.02 | 14.8 | 14.95 | |||
| 80S | 8.56 | 20.6 | 20.81 | |||
| 5″ | DN125 | 139.7 | 10S | 2.77 | 9.23 | 9.32 |
| 40S | 6.55 | 19.05 | 19.24 | |||
| 80S | 9.53 | 26.9 | 27.17 | |||
| 6″ | DN150 | 168.3 | 10S | 2.77 | 11.18 | 11.29 |
| 40S | 7.11 | 24 | 24.24 | |||
| 80S | 10.97 | 35.7 | 36.06 | |||
| 8″ | DN200 | 219.1 | 10S | 2.77 | 14.6 | 14.74 |
| 40S | 8.18 | 33.8 | 34.14 | |||
| 80S | 12.7 | 51.1 | 51.62 | |||
| 10″ | DN250 | 273 | 10S | 3.4 | 22 | 22.21 |
| 40S | 9.27 | 46.3 | 46.77 | |||
| 80S | 14.27 | 70.1 | 70.81 | |||
| 12″ | DN300 | 323.8 | 10S | 3.96 | 31.2 | 31.5 |
| 40S | 9.53 | 54.9 | 55.46 | |||
| 80S | 15.88 | 89.2 | 90.11 |
Notes
Standard: ASME B36.19M Stainless Steel Pipe, applicable for seamless & welded stainless steel pipe.
Schedule explanation:
5S / 10S: Thin-wall light pipe for sanitary, instrument and low-pressure fluid delivery
40S: Standard wall thickness for general industrial pipeline
80S: Heavy wall for high-pressure, high-temperature working conditions
Weight data is theoretical value; actual weight tolerance ±5% due to wall thickness production deviation.
Non-standard outer diameter, wall thickness and customized length are available upon customer drawings.
