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external diameter:12~70mm
wall thickness:1~8mm
length:14000mm Maximum
Steel grade and chemical composition( %) | |||||||
Steel grade | carbon≤ | manganese≤ | silicon≤ | phosphorus≤ | sulfur≤ | chromium≤ | molybdenum≤ |
ST35.8/ST37.5 | 0.17 |
|
| 0.04 | 0.04 |
|
|
ST52/ST52.3 | 0.22 | 0.17 | 0.55 | 0.04 | 0.04 |
|
|
Elongation
Mechanical properties | |||
Steel grade | tensile strength(Mpa) | Yield strength (Mpa) | Elongation(%) |
ST35.8/ST37.5 | 360~480 | ≧235 | ≧25 |
ST52/ST52.3 | 500~560 | ≧270 | ≧21 |