GB 5310 20G High Pressure Boiler Steel Pipe / Seamless Carbon Steel Tube
GB 5310 20G High Pressure Seamless Boiler Tubes / Pipes
GB 5310 20G High Pressure Seamless Boiler Tubes / Pipes are widely used in high-pressure boiler systems for the transportation of fluids at elevated temperatures and pressures. These seamless boiler tubes / pipes conform to the specifications outlined in the GB 5310 standard, ensuring their quality and performance in demanding boiler applications.
Application:
GB 5310 20G High Pressure Seamless Boiler Tubes / Pipes are primarily used in high-pressure boiler systems for the transportation of fluids at elevated temperatures and pressures. These tubes / pipes find application in various industries, including:
- Power Generation: They are utilized in power plants for steam generation and the efficient transfer of heat from the burning fuel to the water or steam.
- Petrochemical Industry: These tubes / pipes are used in petrochemical plants for high-pressure and high-temperature processes, including steam cracking and hydrogen production.
- Refineries: They find application in refineries for the transportation of fluids in high-pressure boiler systems involved in crude oil distillation and product refining.
Chemical Compositions(%) of GB 5310-2008
| Steel grade | C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V |
|---|---|---|---|---|---|---|---|---|---|---|
| 20G | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.030 | ≤0.030 | ≤0.25 | ≤0.15 | ≤0.20 | ≤0.25 | ≤0.08 |
| 20MnG | 0.17-0.24 | 0.17-0.37 | 0.70-1.00 | ≤0.030 | ≤0.030 | ≤0.25 | ≤0.15 | ≤0.20 | ≤0.25 | ≤0.08 |
| 25MnG | 0.18-0.24 | 0.17-0.37 | 0.80-1.10 | ≤0.030 | ≤0.030 | ≤0.25 | ≤0.15 | ≤0.20 | ≤0.25 | ≤0.08 |
| 15CrMo | 0.12-0.18 | 0.17-0.37 | 0.40-0.70 | ≤0.030 | ≤0.030 | 0.80-1.10 | 0.40-0.55 | ≤0.20 | ≤0.30 | |
| 12Cr2MoG | 0.08-0.15 | ≤0.50 | 0.40-0.70 | ≤0.030 | ≤0.030 | 2.00-2.50 | 0.90-1.20 | ≤0.20 | ≤0.30 | |
| 12Cr1MoV | 0.08-0.15 | 0.17-0.37 | 0.40-0.70 | ≤0.030 | ≤0.030 | 0.90-1.20 | 0.25-0.35 | ≤0.20 | ≤0.30 | 0.15-0.30 |
| 12Cr2MoWVTiB | 0.08-0.15 | 0.45-0.75 | 0.45-0.65 | ≤0.030 | ≤0.030 | 1.60-2.10 | 0.50-0.65 | ≤0.20 | ≤0.30 | 0.28-0.42 |
| 10Cr9Mo1VNb | 0.08-0.12 | 0.20-0.50 | 0.30-0.60 | ≤0.020 | ≤0.010 | 8.00-9.50 | 0.85-1.05 | ≤0.20 | ≤0.40 | 0.18-0.25 |
Mechanical Properties of GB5310-2008:
| Steel Grade | Yield Strength (Mpa) | Tensile Strength (Mpa) | Elongation (%) |
|---|---|---|---|
| 20G | 410-550 | 245 | 24 |
| 20MnG | ≥415 | 240 | 22 |
| 25MnG | ≥485 | 275 | 20 |
| 15MoG | 450-600 | 270 | 22 |
| 12CrMoG | 410-560 | 205 | 21 |
| 12Cr2MoG | 450-600 | 280 | 20 |
| 12Cr1MoVG | 470-640 | 255 | 21 |
| 12Cr2MoWVTib | 540-735 | 345 | 18 |
| 10Cr9Mo1VNb | ≥585 | ≥415 | ≥20 |
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