seamless steel pipes for liquid delivery
Steel Grade: 10, 20, Q295, Q345, Q390, Q420, Q460
Standard: GB/T 8163-2008
Application: It is for transmission fluid.
Sizes: O.D.: 60mm~219mm, W.T.: 4mm~35mm.
Chemical Composition, Mass Fraction(%): (Q345 for example)
| Steel Grade | Quality Level | C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | B | Als |
| Q345 | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.15 | 0.20 | 0.30 | 0.50 | 0.30 | 0.012 | 0.10 | - | - |
| B | 0.035 | 0.035 | ||||||||||||||
| C | 0.030 | 0.030 | 0.015 | |||||||||||||
| D | 0.18 | 0.030 | 0.025 | |||||||||||||
| E | 0.025 | 0.020 | ||||||||||||||
Mechanical Properties: (Q345 for example)
| Steel Grade | Quality Level | (MPa) tensile strength | lower yield strength (MPa) | Elongation (%) | impact test | |||
| ±Úºñ W.T.(mm) | temperature (¡æ) | absorbed energy (KV2/J) | ||||||
| 16 | >16~30 | >30 | ||||||
| Q345 | A | 470~630 | 345 | 325 | 295 | 20 | - | - |
| B | +20 | 34 | ||||||
| C | 21 | 0 | ||||||
| D | -20 | |||||||
| E | -40 | 27 | ||||||
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