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ST44 seamless steel pipe
Standard :DIN1629
Mechanical Property:
| Standard | Steel Grade | Tensile Strength (mpa) | Yield Strength(mpa) | elongation(%) |
| din1629 | st37.0 | 350～480 | ≥235 | ≥25 |
| st44.0 | 420～550 | ≥255 | ≥21 | |
| st52.0 | 500～650 | ≥270 | ≥21 |
Chemical Compostion:
| Standard | Steel Grade | Chemical Composition limits % | ||||
| c | si | mn | p、s | cr | ||
| din1629 | st37.0 | ≤0.17 | / | / | ≤0.040 | / |
| st44.0 | ≤0.21 | / | / | ≤0.040 | / | |
| st52.0 | ≤0.22 | ≤0.55 | ≤1.70 | ≤0.040 | / | |
size :
| OD (Ø) | WT (MM) |
| 60 | 6 |
| 90 | 6.7 |
| 90 | 9.5 |
| 159 | 9 |
| 159 | 13.5 |
| 168 | 10 |
| 219 | 10 |
| 219 | 13.5 |
| 273 | 10.5 |
| 355 | 10.5 |
| 406 | 10.5 |
| 406 | 13.5 |
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