| China-GB | America-ASTM | Equivalent |
|---|---|---|
| Q255 | Grade D | SS400, S235JO |
| Q355 | Grade50[345] | S355JR |
| Q420 | Grade60[415] | S420NL |
| Q460 | Grade65[450] | S460NL |
| Height (ft) | Thickness (mm) | Butt Diameter (mm) | Top Diameter (mm) | Design Load (kg) | Yield Stress (MPA) | Zinc Coating (microns) |
|---|---|---|---|---|---|---|
| 25 | 2.5 | 152 | 120 | 300 | 345 | 86 |
| 30 | 3.0 | 226 | 127 | 500 | 345 | 86 |
| 35 | 3.0 | 248 | 127 | 500 | 345 | 86 |
| 40 | 3.0 | 317 | 127 | 500 | 345 | 86 |
| 45 | 4.0 | 328 | 127 | 750 | 345 | 86 |

