The sizes of all pipes covered by ASME B36.10M can be identified by nominal pipe size (NPS) or its correlated nominal diameter (DN) designations. The pipe sizes range from NPS 1/8 (DN 6) to NPS 80 (DN 2000). The outside diameter of pipe NPS 1/8 (DN 6) to NPS 12 (DN 300) is numerically larger than its corresponding nominal sizes. The outside diameter of pipe NPS 14 and larger is numerically equal to the corresponding nominal size.
Generally, the pipe end may be furnished as plain end (PE), butt welding end (BW), threaded (NPT), or grooved. Plain end can be attained by a simple square cut process. Butt welding end shall be machined by a beveling machine in accordance with ASME B16.25. Pipe threads tapped on the pipe end shall conform to ASME B1.20.1. Schedules 5 and 10 wall thicknesses do not permit threading. Grooved ends shall be furnished in accordance with AWWA C606. There are two types of grooves: cut groove and rolled groove.
The nominal weights (masses) and wall thicknesses of steel pipe are listed in below four tables. The weights are calculated on the basis of plain end steel pipe using the following two formulas (a factor shall be multiplied when the pipe material is other than steel):
| NPS (DN) |
SCH No. |
O.D inch mm |
W.T inch mm |
Mass lb/ft kg/m |
|---|---|---|---|---|
| 1/8 (6) |
10 | 0.405 10.3 |
0.049 1.24 |
0.19 0.28 |
| 1/8 (6) |
30 | 0.405 10.3 |
0.057 1.45 |
0.21 0.32 |
| 1/8 (6) |
40 | 0.405 10.3 |
0.068 1.73 |
0.24 0.37 |
| 1/8 (6) |
80 | 0.405 10.3 |
0.095 2.41 |
0.31 0.47 |
| 1/8 (6) |
160 | 0.405 10.3 |
0.124 3.15 |
0.37 0.56 |
| 1/8 (6) |
… | 0.405 10.3 |
0.190 4.83 |
0.44 0.65 |
| 1/4 (8) |
10 | 0.540 13.7 |
0.065 1.65 |
0.33 0.49 |
| 1/4 (8) |
30 | 0.540 13.7 |
0.073 1.85 |
0.36 0.54 |
| 1/4 (8) |
40 | 0.540 13.7 |
0.088 2.24 |
0.43 0.63 |
| 1/4 (8) |
80 | 0.540 13.7 |
0.119 3.02 |
0.54 0.80 |
| 1/4 (8) |
160 | 0.540 13.7 |
0.145 3.68 |
0.61 0.91 |
| 1/4 (8) |
… | 0.540 13.7 |
0.238 6.05 |
0.77 1.41 |
| 3/8 (10) |
10 | 0.675 17.1 |
0.065 1.65 |
0.42 0.63 |
| 3/8 (10) |
30 | 0.675 17.1 |
0.073 1.85 |
0.47 0.70 |
| 3/8 (10) |
40 | 0.675 17.1 |
0.091 2.31 |
0.57 0.84 |
| 3/8 (10) |
80 | 0.675 17.1 |
0.126 3.20 |
0.74 1.10 |
| 3/8 (10) |
160 | 0.675 17.1 |
0.158 4.01 |
0.87 1.29 |
| 3/8 (10) |
… | 0.675 17.1 |
0.252 6.40 |
1.14 1.69 |
| 1/2 (15) |
5 | 0.840 21.3 |
0.065 1.65 |
0.54 0.80 |
| 1/2 (15) |
10 | 0.840 21.3 |
0.083 2.11 |
0.67 1.00 |
| NPS (DN) |
SCH No. |
O.D inch mm |
W.T inch mm |
Mass lb/ft kg/m |
|---|---|---|---|---|
| 8 (200) |
5 | 8.625 219.1 |
0.109 2.77 |
9.92 14.78 |
| 8 (200) |
… | 8.625 219.1 |
0.125 3.18 |
11.36 16.93 |
| 8 (200) |
10 | 8.625 219.1 |
0.148 3.76 |
13.41 19.97 |
| 8 (200) |
… | 8.625 219.1 |
0.156 3.96 |
14.12 21.01 |
| 8 (200) |
… | 8.625 219.1 |
0.188 4.78 |
16.96 25.26 |
| 8 (200) |
… | 8.625 219.1 |
0.203 5.16 |
18.28 27.22 |
| 8 (200) |
… | 8.625 219.1 |
0.219 5.56 |
19.68 29.28 |
| 8 (200) |
20 | 8.625 219.1 |
0.250 6.35 |
22.38 33.32 |
| 8 (200) |
30 | 8.625 219.1 |
0.277 7.04 |
24.72 36.82 |
| 8 (200) |
… | 8.625 219.1 |
0.312 7.92 |
27.73 41.25 |
| 8 (200) |
40 | 8.625 219.1 |
0.322 8.18 |
28.58 42.55 |
| 8 (200) |
… | 8.625 219.1 |
0.344 8.74 |
30.45 45.34 |
| 8 (200) |
… | 8.625 219.1 |
0.375 9.53 |
33.07 49.25 |
| 8 (200) |
60 | 8.625 219.1 |
0.406 10.31 |
35.67 53.09 |
| 8 (200) |
… | 8.625 219.1 |
0.438 11.13 |
38.33 57.08 |
| 8 (200) |
80 | 8.625 219.1 |
0.500 12.70 |
43.43 64.64 |
| 8 (200) |
… | 8.625 219.1 |
0.562 14.27 |
48.44 72.08 |
| 8 (200) |
100 | 8.625 219.1 |
0.594 15.09 |
51.00 75.92 |
| 8 (200) |
… | 8.625 219.1 |
0.625 15.88 |
53.45 79.59 |
| 8 (200) |
120 | 8.625 219.1 |
0.719 18.26 |
60.77 90.44 |
