ASTM A53 specification also covers seamless steel pipe. The pipe is intended for pressure and mechanical applications and is also acceptable for ordinary uses in oil, gas, steam, water and air lines. It is suitable for welding, bending and flanging.
Available size for Sch40 (STD) pipe
| Size | Thickness Sch40 (mm) | Thickness STD (mm) | Test pressure Sch40 (MPa) | Test pressure STD (MPa) | Ref. No. |
|---|---|---|---|---|---|
| 1/2″ / DN15 / 21.3mm | 2.77 | 2.77 | 4.8 | 4.8 | P1201 (UL) |
| 3/4″ / DN20 / 26.7mm | 2.87 | 2.87 | 4.8 | 4.8 | P1202 (UL) |
| 1″ / DN25 / 33.4mm | 3.38 | 3.38 | 4.8 | 4.8 | P1203 (UL) |
| 1-1/4″ / DN32 / 42.2mm | 3.56 | 3.56 | 9.0 | 9.0 | P1204 (UL) |
| 1-1/2″ / DN40 / 48.3mm | 3.68 | 3.68 | 9.0 | 9.0 | P1205 (UL) |
| 2″ / DN50 / 60.3mm | 3.91 | 3.91 | 17.2 | 17.2 | P1206 (UL) |
| 2-1/2″ / DN65 / 73.0mm | 5.16 | 5.16 | 17.2 | 17.2 | P1207 (UL) |
| 3″ / DN80 / 88.9mm | 5.49 | 5.49 | 17.2 | 17.2 | P1208 (UL) |
| 4″ / DN100 / 114.3mm | 6.02 | 6.02 | 15.2 | 15.2 | P1209 (UL) |
| 5″ / DN125 / 141.3mm | 6.55 | 6.55 | 13.4 | 13.4 | P1210 (UL) |
| 6″ / DN150 / 168.3mm | 7.11 | 7.11 | 12.3 | 12.3 | P1211 (UL) |
| 8″ / DN200 / 219.1mm | 8.18 | 8.18 | 10.8 | 10.8 | P1212 (UL) |
| 10″ / DN250 / 273.0mm | 9.27 | 9.27 | 9.9 | 9.9 | P1213 (UL) |
| 12″ / DN300 / 323.8mm | 10.31 | 9.52 | 9.2 | 8.5 | P1214 (UL) |
| 14″ / DN350 / 355.6mm | 11.13 | 9.52 | 9.0 | 7.7 | P1215 (UL) |
| 16″ / DN400 / 406.4mm | 12.70 | 9.52 | 9.0 | 6.8 | P1216 (ISO) |
| 18″ / DN450 / 457.0mm | 14.27 | 9.52 | 9.0 | 6.1 | P1217 (ISO) |
| 20″ / DN500 / 508.0mm | 15.09 | 9.52 | 8.6 | 5.4 | P1218 (ISO) |
| 24″ / DN600 / 610.0mm | 17.48 | 9.52 | 8.3 | 4.5 | P1219 (ISO) |
Available size for Sch80 (XS) pipe
| Size | Thickness Sch80 (mm) | Thickness XS (mm) | Test pressure Sch80 (MPa) | Test pressure XS (MPa) | Ref. No. |
|---|---|---|---|---|---|
| 1/2″ / DN15 / 21.3mm | 3.73 | 3.73 | 5.9 | 5.9 | P1221 (ISO) |
| 3/4″ / DN20 / 26.7mm | 3.91 | 3.91 | 5.9 | 5.9 | P1222 (ISO) |
| 1″ / DN25 / 33.4mm | 4.55 | 4.55 | 5.9 | 5.9 | P1223 (UL) |
| 1-1/4″ / DN32 / 42.2mm | 4.85 | 4.85 | 13.1 | 13.1 | P1224 (UL) |
| 1-1/2″ / DN40 / 48.3mm | 5.08 | 5.08 | 13.1 | 13.1 | P1225 (UL) |
| 2″ / DN50 / 60.3mm | 5.54 | 5.54 | 17.2 | 17.2 | P1226 (UL) |
| 2-1/2″ / DN65 / 73.0mm | 7.01 | 7.01 | 17.2 | 17.2 | P1227 (UL) |
| 3″ / DN80 / 88.9mm | 7.62 | 7.62 | 17.2 | 17.2 | P1228 (UL) |
| 4″ / DN100 / 114.3mm | 8.56 | 8.56 | 19.3 | 19.3 | P1229 (UL) |
| 5″ / DN125 / 141.3mm | 9.53 | 9.53 | 19.3 | 19.3 | P1230 (UL) |
| 6″ / DN150 / 168.3mm | 10.97 | 10.97 | 18.9 | 18.9 | P1231 (UL) |
| 8″ / DN200 / 219.1mm | 12.70 | 12.70 | 16.8 | 16.8 | P1232 (UL) |
| 10″ / DN250 / 273.0mm | 15.09 | 12.70 | 16.0 | 13.4 | P1233 (ISO) |
| 12″ / DN300 / 323.8mm | 17.48 | 12.70 | 15.7 | 11.4 | P1234 (ISO) |
| 14″ / DN350 / 355.6mm | 19.05 | 12.70 | 15.5 | 10.3 | P1235 (ISO) |
| 16″ / DN400 / 406.4mm | 21.44 | 12.70 | 15.3 | 9.0 | P1236 (ISO) |
| 18″ / DN450 / 457.0mm | 23.83 | 12.70 | 15.1 | 8.1 | P1237 (ISO) |
| 20″ / DN500 / 508.0mm | 26.19 | 12.70 | 15.0 | 7.2 | P1238 (ISO) |
| 24″ / DN600 / 610.0mm | 30.96 | 12.70 | 14.7 | 6.1 | P1239 (ISO) |
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