GB5310 20G Hot rolled boiler tubes
GNEE manufactures and supplies GB5310 20G seamless pipes, you can search for any size and grade of steel seamless pipes to compare prices.
GB5310 20G steel pipe is a high-quality carbon structural steel with a carbon content of 0.17-0.24%, a tensile strength of 410Mpa, and a yield point of 230-250Mpa. Due to the excellent mechanical properties and heat resistance of GB5310 20G carbon steel pipe, it is often used in the production of boiler tubes and pressure vessels.
GB5310 20G carbon steel boiler tubes are made through hot rolling and have the advantages of high-temperature resistance and good plasticity. GB5310 20G hot rolled boiler steel pipes are mainly used in power plants, the petroleum and chemical industries.
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GB5310 20G seamless steel pipe Product specification
GB5310 20G Hot rolled tube Chemical composition
| Grade | Chemical Composition(%) | ||||||||||
| C | Si | Mn | Cr | Mo | V | Ni | Altot | Cu | P | ||
| Max | |||||||||||
| 20G | 0.17～0.23 | 0.17～0.37 | 0.35～0.65 | 0.25 | 0.15 | 0.08 | 0.25 | 0.015 | 0.20 | 0.025 | |
GB5310 20G tube Allowable deviation of outer diameter and wall thickness
| Type of steel pipe | Outer diameter(mm) | Tolerance | |||
| ordinary | advanced | ||||
| Hot rolled tube | OD | ≤50 | ±0.40 | ±0.30 | |
| ＞50～≤325 | WT≤35 | ±0.75% | ±0.5% | ||
| WT＞35 | ±1% | ±0.75% | |||
| ＞325 | ±1% | ±0.75% | |||
| WT | ≤4.0 | ±0.4 | ±0.3 | ||
| ＞4.0～≤20 | ±10% | ±7.5% | |||
| ＞20 | OD＜219 | ±10% | ±7.5% | ||
| OD≥219 | +12.5% -10% |
±10% | |||
GB5310 20G steam boiler tube
Advantages of Choosing GNEE
GNEE pipes and tubes have a wide range of applications in many market sectors, including the oil and gas, petrochemical and construction industries. And we can offer different properties for different purposes (e.g. corrosion protection).
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