Seamless steel pipe- pipeline
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Seamless Steel pipe for Low temperature pipeline
Standard:
GB/T 18984-2003
Uses:
Suitable for -45 ~ -100 °C in low temperature pressure vessel pipelines and low temperature heat exchanger steel tubes.
The main production steel grade:
09DG, 16MnDG
Mechanical behavior:
|
Grade |
Rm (MPa) |
ReL (MPa) |
A (%) |
Impact test |
|
|
T ( °C ) |
Kv ( J) |
||||
|
16MnDG |
490~665 |
≥ 315 |
≥ 30 |
-45 |
≥ 34 |
|
10MnDG |
400 |
≥ 240 |
≥ 35 |
-45 |
≥ 34 |
|
09D |
385 |
≥ 240 |
≥ 35 |
-45 |
≥ 47 |
|
09Mn2VDG |
450 |
≥ 300 |
≥ 30 |
-70 |
≥ 47 |
chemical composition:
|
Grade
|
C |
Si |
Mn |
P |
S |
V |
|
16MnDG |
0.12~0.20 |
0.20 to 0.55 |
1.20 to 1.60 |
≤0.025 |
≤0.025 |
≤0.03 |
| 10MnDG | ≤0.13 | 0.17 to 0.37 | ≤1.35 | ≤0.025 | ≤0.025 | ≤0.07 |
| 09D | ≤0.12 | 0.17 to 0.37 | 0.95 to 1.35 | ≤0.025 | ≤0.025 | ≤0.07 |
| 09Mn2VDG | ≤0.12 | 0.17 to 0.37 | ≤1.85 | ≤0.025 | ≤0.025 |
≤0.12 |
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