ASTM A790 Duplex Seamless Welded Pipe Size Chart
DNS: 1/8"-30", DN 6 -DN 750
OD: 10.29mm - 762mm;
Pipe Schedules: Sch5S, Sch10S, Sch40S, Sch80S
| NPSnominal pipe size |
Outside Diameter |
Pipe Schedules |
| DN |
NPS(in) |
OD(mm) |
Sch5S
in(mm) |
Sch10S
in(mm) |
Sch40S
in(mm) |
Sch80S
in(mm) |
| 6 |
1/8 |
10.29 |
… |
0.049(1.24) |
0.068(1.73) |
0.095(2.41) |
| 8 |
1/4 |
13.72 |
… |
0.065(1.65) |
0.088(2.24) |
0.119(3.02) |
| 10 |
3/8 |
17.15 |
… |
0.065(1.65) |
0.091(2.31) |
0.126(3.2) |
| 15 |
1/2 |
21.34 |
0.065(1.65) |
0.083(2.11) |
0.109(2.77) |
0.147(3.73) |
| 20 |
3/4 |
26.67 |
0.065(1.65) |
0.083(2.11) |
0.113(2.87) |
0.154(3.91) |
| 25 |
1 |
33.40 |
0.065(1.65) |
0.109(2.77) |
0.133(3.38) |
0.179(4.55) |
| 32 |
1 1/4 |
42.16 |
0.065(1.65) |
0.109(2.77) |
0.14(3.56) |
0.191(4.85) |
| 40 |
1 1/2 |
48.26 |
0.065(1.65) |
0.109(2.77) |
0.145(3.68) |
0.2(5.08) |
| 50 |
2 |
60.33 |
0.065(1.65) |
0.109(2.77) |
0.154(3.91) |
0.218(5.54) |
| 65 |
2 1/2 |
73.03 |
0.083(2.11) |
0.12(3.05) |
0.203(5.16) |
0.276(7.01) |
| 80 |
3 |
88.90 |
0.083(2.11) |
0.12(3.05) |
0.216(5.49) |
0.3(7.62) |
| 90 |
3 1/2 |
101.6 |
0.083(2.11) |
0.12(3.05) |
0.226(5.74) |
0.318(8.08) |
| 100 |
4 |
114.3 |
0.083(2.11) |
0.12(3.05) |
0.237(6.02) |
0.337(8.56) |
| 125 |
5 |
141.3 |
0.109(2.77) |
0.134(3.4) |
0.258(6.55) |
0.375(9.52) |
| 150 |
6 |
168.28 |
0.109(2.77) |
0.134(3.4) |
0.28(7.11) |
0.432(10.97) |
| 200 |
8 |
219.08 |
0.109(2.77) |
0.148(3.76) |
0.322(8.18) |
0.5(12.7) |
| 250 |
10 |
273.05 |
0.134(3.4) |
0.165(4.19) |
0.365(9.27) |
0.5(12.7) |
| 300 |
12 |
323.85 |
0.156(3.96) |
0.18(4.57) |
0.375(9.52) |
0.5(12.7) |
| 350 |
14 |
355.6 |
0.156(3.96) |
0.188(4.78) |
… |
... |
| 400 |
16 |
406.4 |
0.165(4.19) |
0.188(4.78) |
… |
... |
| 450 |
18 |
457.2 |
0.165(4.19) |
0.188(4.78) |
… |
... |
| 500 |
20 |
508 |
0.188(4.78) |
0.218(5.54) |
… |
... |
| 550 |
22 |
558 |
0.188(4.78) |
0.218(5.54) |
… |
... |
| 600 |
24 |
609.6 |
0.218(5.54) |
0.25(6.35) |
… |
... |
| 750 |
30 |
762 |
0.25(6.35) |
0.312(7.92) |
… |
... |
Schedules 5S and 10S wall thicknesses do not permit threading in accordance with the American National Standard for Pipe Threads (ANSI B1.20.1).
B These do not conform to the American National Standard for Welded and Seamless Wrought Steel Pipe (ANSI B36.10-1979).
